What app do you use to check your Pismo's temps, iamdigitalman?

I've got the famous 900Mhz G3 upgrade right here - sitting next to my Pismo (400 @ 450Mhz); bought it off eBay the guy didn't know what had caused it to die. Clearly the cracked CPU - overheating perhaps. Thankfully he refunded my money and said to keep the card.

JB