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 TOSHIBA that include a temperature sensor Manufacturer Model Size Notes TOSHIBA TOSHIBA MK1011GAH 100GB TOSHIBA TOSHIBA MK1031GAS 100GB TOSHIBA TOSHIBA MK1032GAX 100GB TOSHIBA TOSHIBA MK1032GSX 100GB TOSHIBA TOSHIBA MK1034GSX 100GB TOSHIBA TOSHIBA MK1214GAH 120GB TOSHIBA TOSHIBA MK1233GAS 120GB TOSHIBA TOSHIBA MK1234GAX 120GB TOSHIBA TOSHIBA MK1234GSX 120GB TOSHIBA TOSHIBA MK1237GSX 120GB TOSHIBA TOSHIBA MK1246GSX 120GB TOSHIBA TOSHIBA MK1251GSY 120GB TOSHIBA TOSHIBA MK1252GSX 120GB TOSHIBA TOSHIBA MK1637GSX 160GB TOSHIBA TOSHIBA MK1646GSX 160GB TOSHIBA TOSHIBA MK1652GSX 160GB TOSHIBA TOSHIBA MK2004GAL 20GB TOSHIBA TOSHIBA MK2006GAL 20GB TOSHIBA TOSHIBA MK2023GAS 20GB TOSHIBA TOSHIBA MK2035GSS 200GB TOSHIBA TOSHIBA MK2046GSX 200GB TOSHIBA TOSHIBA MK2049GSY 200GB TOSHIBA TOSHIBA MK2051GSY 200GB TOSHIBA TOSHIBA MK2546GSX 250GB TOSHIBA TOSHIBA MK2546GSX_200 200GB TOSHIBA TOSHIBA MK2552GSX 250GB TOSHIBA TOSHIBA MK3004GAH 29.3GB TOSHIBA TOSHIBA MK3006GAL 30GB TOSHIBA TOSHIBA MK3008GAL 30GB TOSHIBA TOSHIBA MK3021GAS 30.01GB TOSHIBA TOSHIBA MK3025GAS 30GB TOSHIBA TOSHIBA MK3252GSX 320GB TOSHIBA TOSHIBA MK4004GAH 40GB TOSHIBA TOSHIBA MK4006GAH 40GB TOSHIBA TOSHIBA MK4009GAL 40GB TOSHIBA TOSHIBA MK4021GAS 40.0GB TOSHIBA TOSHIBA MK4025GAS 40GB TOSHIBA TOSHIBA MK4025GASL 40GB TOSHIBA TOSHIBA MK4026GAX 40GB TOSHIBA TOSHIBA MK4026GAX ROHS 40GB TOSHIBA TOSHIBA MK4032GAX 40GB TOSHIBA TOSHIBA MK4032GSX 40GB TOSHIBA TOSHIBA MK4034GSX 40GB TOSHIBA TOSHIBA MK6006GAH 60GB TOSHIBA TOSHIBA MK6008GAH 60GB TOSHIBA TOSHIBA MK6021GAS 58.6GB TOSHIBA TOSHIBA MK6022GAX 58.6GB TOSHIBA TOSHIBA MK6025GAS 60GB TOSHIBA TOSHIBA MK6026GAX 60.0GB TOSHIBA TOSHIBA MK6026GAXB 60GB TOSHIBA TOSHIBA MK6028GAL 60GB TOSHIBA TOSHIBA MK6032GAX 60GB TOSHIBA TOSHIBA MK6032GSX 60GB TOSHIBA TOSHIBA MK6034GAX 60GB TOSHIBA TOSHIBA MK6034GSX 60GB TOSHIBA TOSHIBA MK6037GSX 60GB TOSHIBA TOSHIBA MK8007GAH 80GB TOSHIBA TOSHIBA MK8009GAH 80GB TOSHIBA TOSHIBA MK8025GAS 80.0GB TOSHIBA TOSHIBA MK8026GAX 80.0GB TOSHIBA TOSHIBA MK8032GAX 80GB TOSHIBA TOSHIBA MK8032GSX 80GB TOSHIBA TOSHIBA MK8034GSX 80GB TOSHIBA TOSHIBA MK8037GSX 80GB TOSHIBA TOSHIBA MK8040GSX 80GB TOSHIBA TOSHIBA MK8046GSX 80GB TOSHIBA TOSHIBA MK8052GSX 80GB There are 67 HARD DISKs listed here.