cpu temp overlay?

Just a heads up, some games' anti-cheat - like Punkbuster - may fail anti-cheat validation when you're running with overlays enabled.

This will show the max temp your CPU has reached. So you can alt-tab and check it easily. I use it for my G15 LCD.
This is what i have on mine. I have a desktop gadget that tell me CPU activity and when I have CoreTemp up the gadget will display current temperature too. Very simple and easy to read. It even has a feature that will either shut your computer down or put it to sleep if it hits a certain temperature.