Just wanted to add:2.4GHz SR MBP 15" with 4GB RAM.
Idle: 42c 2000rpm
WoW: ~70c, up to 6000rpm
WoW was flawless again for hours this evening, framerates from mid 30's to 60+ - needless to say I'm extremely impressed with this laptop! I did install smcFanControl though, so I could force the fans to 6000rpm so the base wasn't so hot on my legs.
- Machine stays nice and cool on mains and battery at idle, currently at 46c but it varies.
- Under load, the CPU temp will get to around 90c before the fans kick in fully. They'll go right up to 6000rpm by themselves (no manual adjustment) and stay there to bring temperatures back into the 70s. This is on mains, I'd expect it to stay very hot on battery as the fans come on less often and slower.