I saw Asshole Mario at Zach’s last night (What a sadistic game), and I found this video, which is pretty cool:
http://msm.grumpybumpers.com/?p=20
Basically it’s a overlap of all of his failed tries until he finished the first world. Very cool!
Here’s a video of a guy playing Special Stage - 2
The whole video is good, but the best part starts at 6:00. 
I’m playing SMW Kaizo edition right now… THE PAIN~