Most recent hard disks do include S.M.A.R.T. support. You might find interesting to read the "What is S.M.A.R.T. and how can we use it to avoid data disaster?" article. S.M.A.R.T. can even report the temperature for your hard disk. If your disk controller, and its related drivers, allow it, SpeedFan can almost always access and report reliability data from any hard disk manufactured since 1995.
SpeedFan properly accesses the temperature sensor available in the following hard disks:

Manufacturers EXCELSTOR    17 FUJITSU    122 HITACHI    189 HP Compaq    3 IBM    53 MAXTOR    163 MDT    14 SAMSUNG    135 SEAGATE    297 SILICON IMAGE    1 TOSHIBA    67 WESTERN DIGITAL    1026

Hard disks from SEAGATE that include a temperature sensor Manufacturer Model Size Notes SEAGATE ST3100011A 100GB SEAGATE ST31000333AS 1000GB SEAGATE ST31000340AS 1000GB SEAGATE ST31000340SV 1000GB SEAGATE ST31000523AS 1000GB SEAGATE ST310014A 10.24GB SEAGATE ST310210A 10.0GB SEAGATE ST310211A 9.8GB SEAGATE ST310215A 10.0GB SEAGATE ST310216A 10GB SEAGATE ST3120022A 117.2GB SEAGATE ST3120023A 117.2GB SEAGATE ST3120023AS 120GB SEAGATE ST3120024A 120GB SEAGATE ST3120025A 120.0GB SEAGATE ST3120025ACE 120GB SEAGATE ST3120026A 120.0GB SEAGATE ST3120026AS 117.2GB SEAGATE ST3120211AS 120GB SEAGATE ST3120213A 120GB SEAGATE ST3120213AS 120GB SEAGATE ST3120811AS 120GB SEAGATE ST3120813AS 120GB SEAGATE ST3120814A 120GB SEAGATE ST3120827AS 120GB SEAGATE ST31500341AS 1500GB SEAGATE ST31500343AS 1500GB SEAGATE ST315320A 14.9GB SEAGATE ST3160021A 160GB SEAGATE ST3160021AS 160GB SEAGATE ST3160022A 160GB SEAGATE ST3160022ACE 160GB SEAGATE ST3160023A 160.0GB SEAGATE ST3160023AS 160.0GB SEAGATE ST3160211AS 160GB SEAGATE ST3160212A 160GB SEAGATE ST3160212ACE 160GB SEAGATE ST3160212AS 160GB SEAGATE ST3160212SCE 160GB SEAGATE ST3160215A 160GB SEAGATE ST3160215ACE 160GB SEAGATE ST3160215AS 160GB SEAGATE ST3160215SCE 160GB SEAGATE ST3160811AS 160GB SEAGATE ST3160812A 160GB SEAGATE ST3160812AS 160GB SEAGATE ST3160812AV 160GB SEAGATE ST3160812SV 160GB SEAGATE ST3160813AS 160GB SEAGATE ST3160815A 160GB SEAGATE ST3160815AS 160GB SEAGATE ST3160815AV 160GB SEAGATE ST3160815SV 160GB SEAGATE ST3160827AS 160.0GB SEAGATE ST3160828AS 160GB SEAGATE ST3200021A 200.0GB SEAGATE ST320011A 19.6GB SEAGATE ST320013A 20GB SEAGATE ST320014A 20.02GB SEAGATE ST320015A 20GB SEAGATE ST3200820A 200GB SEAGATE ST3200820AS 200GB SEAGATE ST3200822A 200.0GB SEAGATE ST3200822AS 200.0GB SEAGATE ST3200826A 200GB SEAGATE ST3200826ACE 200GB SEAGATE ST3200826AS 200GB SEAGATE ST3200827A 200GB SEAGATE ST3200827AS 200GB SEAGATE ST320410A 19.6GB SEAGATE ST320413A 19.6GB SEAGATE ST320414A 19.6GB SEAGATE ST320420A 19.9GB SEAGATE ST320424A 20GB SEAGATE ST3250310AS 250GB SEAGATE ST3250310SV 250GB SEAGATE ST3250410AS 250GB SEAGATE ST3250620A 250GB SEAGATE ST3250620AS 250GB SEAGATE ST3250620NS 250GB SEAGATE ST3250623A 250GB SEAGATE ST3250623NS 250GB SEAGATE ST3250624A 250GB SEAGATE ST3250624AS 250GB SEAGATE ST3250624NS 250GB SEAGATE ST3250820A 250GB SEAGATE ST3250820ACE 250GB SEAGATE ST3250820AS 250GB SEAGATE ST3250820AV 250GB SEAGATE ST3250820NS 250GB SEAGATE ST3250820SCE 250GB SEAGATE ST3250820SV 250GB SEAGATE ST3250823A 250GB SEAGATE ST3250823ACE 250GB SEAGATE ST3250823AS 250GB SEAGATE ST3250823NS 250GB SEAGATE ST3250823SCE 250GB SEAGATE ST3250824A 250GB SEAGATE ST3250824AS 250GB SEAGATE ST3250824AV 250GB SEAGATE ST3250824NS 250GB SEAGATE ST3250824SV 250GB SEAGATE ST330013A 30.01GB SEAGATE ST3300620A 300GB SEAGATE ST3300620AS 300GB SEAGATE ST3300622A 300GB SEAGATE ST3300622AS 300GB SEAGATE ST3300622AS_MBP 300GB SEAGATE ST3300631A 300GB SEAGATE ST3300631AS 300GB SEAGATE ST3300820AS 300GB SEAGATE ST3300822A 300GB SEAGATE ST3300822AS 300GB SEAGATE ST3300831A 300GB SEAGATE ST3300831AS 300GB SEAGATE ST3300831SCE 300GB SEAGATE ST330610A 29.3GB SEAGATE ST330620A 29.3GB SEAGATE ST330621A 29.3GB SEAGATE ST330630A 29.9GB SEAGATE ST330631A 30.6GB SEAGATE ST3320613AS 320GB SEAGATE ST3320620A 320GB SEAGATE ST3320620AS 320GB SEAGATE ST3320620AV 320GB SEAGATE ST3320620NS 320GB SEAGATE ST3320620SV 320GB SEAGATE ST3320633AS 320GB SEAGATE ST3320813AS 320GB SEAGATE ST3320820A 320GB SEAGATE ST3320820ACE 320GB SEAGATE ST3320820AS 320GB SEAGATE ST3320833AS 320GB SEAGATE ST3360320AS 360GB SEAGATE ST3360832AS 360GB SEAGATE ST340012A 40GB SEAGATE ST340014A 40.0GB SEAGATE ST340014AS 40GB SEAGATE ST340015A 39.1GB SEAGATE ST340015ACE 40GB SEAGATE ST340016A 39.1GB SEAGATE ST340017A 40GB SEAGATE ST3400320AS 400GB SEAGATE ST3400620A 400GB SEAGATE ST3400620AS 400GB SEAGATE ST3400620NS 400GB SEAGATE ST3400632A 400GB SEAGATE ST3400632NS 400GB SEAGATE ST3400633A 400GB SEAGATE ST3400633AS 400GB SEAGATE ST3400820A 400GB SEAGATE ST3400820AS 400GB SEAGATE ST3400832A 400GB SEAGATE ST3400832AS 400GB SEAGATE ST3400832NS 400GB SEAGATE ST3400833A 400GB SEAGATE ST3400833AS 400GB SEAGATE ST3400833NS 400GB SEAGATE ST3402111A 40GB SEAGATE ST3402111AS 40GB SEAGATE ST340211AS 40GB SEAGATE ST340212AS 40GB SEAGATE ST340810A 39.1GB SEAGATE ST340810ACE 39.1GB SEAGATE ST340823A 39.1GB SEAGATE ST340824A 39.1GB SEAGATE ST340825A 40GB SEAGATE ST3500320AS 500GB SEAGATE ST3500320SV 500GB SEAGATE ST3500410AS 500GB SEAGATE ST3500418AS 500GB SEAGATE ST3500620AS 500GB SEAGATE ST3500630A 500GB SEAGATE ST3500630AS 500GB SEAGATE ST3500630AV 500GB SEAGATE ST3500630NS 500GB SEAGATE ST3500630SV 500GB SEAGATE ST3500631NS 500GB SEAGATE ST3500641A 500GB SEAGATE ST3500641AS 500GB SEAGATE ST3500641AS_MBP 500GB SEAGATE ST3500641NS 500GB SEAGATE ST3500820AS 500GB SEAGATE ST3500830A 500GB SEAGATE ST3500830AS 500GB SEAGATE ST3500830SCE 500GB SEAGATE ST3500841A 500GB SEAGATE ST3500841AS 500GB SEAGATE ST360014A 60GB SEAGATE ST360015A 58.6GB SEAGATE ST360020A 58.6GB SEAGATE ST360021A 58.6GB SEAGATE ST3640323AS 640GB SEAGATE ST3650640A 650GB SEAGATE ST3750330AS 750GB SEAGATE ST3750630AS 750GB SEAGATE ST3750640A 750GB SEAGATE ST3750640AS 750GB SEAGATE ST3750640NS 750GB SEAGATE ST3750640SV 750GB SEAGATE ST3750840AS 750GB SEAGATE ST380011A 80.0GB SEAGATE ST380011AS 80GB SEAGATE ST380012A 80GB SEAGATE ST380012ACE 80GB SEAGATE ST380013A 80GB SEAGATE ST380013AS 80.0GB SEAGATE ST380020A 78.2GB SEAGATE ST380020ACE 78.2GB SEAGATE ST380021A 78.2GB SEAGATE ST380023A 80GB SEAGATE ST380023AS 78.2GB SEAGATE ST380024A 80GB SEAGATE ST3802110A 80GB SEAGATE ST3802110ACE 80GB SEAGATE ST3802110AS 80GB SEAGATE ST380211AS 80GB SEAGATE ST380215A 80GB SEAGATE ST380215AS 80GB SEAGATE ST3808110AS 80GB SEAGATE ST380811AS 80GB SEAGATE ST380815AS 80GB SEAGATE ST380817AS 80GB SEAGATE ST380819AS 80GB SEAGATE ST3_INVALID_PFM 750GB SEAGATE ST910021A 100GB SEAGATE ST910021AS 100GB SEAGATE ST9100821AS 100GB SEAGATE ST9100822A 100GB SEAGATE ST9100823A 100GB SEAGATE ST9100824AS 100GB SEAGATE ST9100825A 100GB SEAGATE ST9100828A 100GB SEAGATE ST9100828AS 100GB SEAGATE ST9120817AS 120GB SEAGATE ST91208220AS 120GB SEAGATE ST9120822A 120GB SEAGATE ST9120822AS 120GB SEAGATE ST9120823AS 120GB SEAGATE ST9120823ASG 120GB SEAGATE ST9120824A 120GB SEAGATE ST9160310AS 160GB SEAGATE ST9160411ASG 160GB SEAGATE ST9160821A 160GB SEAGATE ST9160821AS 160GB SEAGATE ST91608220AS 160GB SEAGATE ST9160823AS 160GB SEAGATE ST9160823ASG 160GB SEAGATE ST9160827AS 160GB SEAGATE ST9200420AS 200GB SEAGATE ST9200420ASG 200GB SEAGATE ST9200423ASG 200GB SEAGATE ST9200827AS 200GB SEAGATE ST92011A 20GB SEAGATE ST92014A 20GB SEAGATE ST920217AS 20GB SEAGATE ST9250320AS 250GB SEAGATE ST9250421AS 250GB SEAGATE ST9250421ASG 250GB SEAGATE ST9250827AS 250GB SEAGATE ST93015A 30.01GB SEAGATE ST9320320AS 320GB SEAGATE ST9320421AS 320GB SEAGATE ST9320421ASG 320GB SEAGATE ST94011A 40.0GB SEAGATE ST94019A 40GB SEAGATE ST9402112A 40GB SEAGATE ST9402113A 40GB SEAGATE ST9402115A 40GB SEAGATE ST9408114A 40GB SEAGATE ST940814AS 40GB SEAGATE ST940815A 40GB SEAGATE ST94813AS 40GB SEAGATE ST9500325AS 500GB SEAGATE ST950212A 50GB SEAGATE ST950814A 50GB SEAGATE ST96023A 60GB SEAGATE ST96023AS 60GB SEAGATE ST960812A 60GB SEAGATE ST960813A 60GB SEAGATE ST960813AS 60GB SEAGATE ST960815A 60GB SEAGATE ST960821A 60GB SEAGATE ST960822A 60GB SEAGATE ST96812AS 60GB SEAGATE ST980811A 80GB SEAGATE ST980811AS 80GB SEAGATE ST980812AS 80GB SEAGATE ST980813AS 80GB SEAGATE ST980813ASG 80GB SEAGATE ST980815A 80GB SEAGATE ST9808210A 80GB SEAGATE ST9808211A 80GB SEAGATE ST980825A 80GB SEAGATE ST980825AS 80GB SEAGATE ST980829A 80GB SEAGATE ST98823AS 80GB There are 297 HARD DISKs listed here.