Is there any software that tells temps while in game?

[WatchTower]

You know how fraps gives you your fps while you play a game I'd like something that tells me my cpu and gpu temps while playing games so I can see how my PCs handling things. Dose such a peice of software exist?

 

[WatchTower]

I guess it would be best if I buy one of them things that go in a floppy or CDrom bay that has an LED display but first do they support gpu temps as well as cpu?