He got to the Soulstone Chamber (Inferno difficulty).
I've been watching for 20 minutes now and he died 10-15 times to creeps 1-shotting him every time.
http://www.twitch.tv/qik1
/popcorn

Lol yeah. Apparently anything past act 1 is tuned to be completely impossible - it all just one-shots you. Trash though. Not bosses. Apparently the bosses are all tuned properly, so people are just skipping all the trash to rush inferno bosses.