Officially? (Edit: Obviously they do now, just checked the Apple link) My Macbook Pro "died" just 1 month out of warranty and I was lucky that I'd purchased my mac from a reseller who replaced it in goodwill, others weren't so lucky. They didn't acknowledge it officially, although NVIDIA did. IIRC they replaced it with the same faulty board (august/september '08).
What particular model of MacBook Pro are you referring to? Those with Nvidia GeForce 9400M ?
Mine is still rockin, same vid card... best machine I've ever bought! (first mac)
Mine works, doesn't exactly rock, more like generates huge amounts of heat. This after a Powerbook g4 that needed 4 or 5 logic board transplants, and a plastic macBook (core 2 duo) that was dog slow.
Mine is still rocking too. I was just stress-testing it with, ahem, Warcraft...