A wanna-be pro streamer named "Patrick Klepek" came across The Giant Bomb Level 3 - Doable! and has been trying to beat it for the past three days. There seemed to be some pretty brutal sections when the community made it, as it's the first time Jeff & Dan weren't able to finish a level by the end of the stream: Giant Bomb Makes Mario - Part 3
They had to make some concessions (for the better, I think...fair mushrooms!) to finish it in the follow-up stream: Giant Bomb Makes Mario - Part 4
Patrick had some struggles with the level for the first two days, but overall seemed to be doing ok. Sometimes even seeming to have fun! :D
But I personally don't really care about him having fun. I like to watch in the hopes that the level will break him, in both mind and spirit. That process starts partway through the third day (~22:12 seconds in) and ramps up to everybody's favorite: the full-on ragequit.
He vowed to beat the level over this weekend, so there may be more videos up by the time you read this. I'm sure he will beat it...not so sure that he won't start day drinking again before he does.