Mark + Mike Show
I saw this about a year ago, and forgot about it until I watched American Movie again yesterday. I was amazed at the lengthy debate about whether the film was real or not. I read recently Mike got married, and there is a reality TV show with Mark & Mike just started shooting when Mike & Mark went to pick out the ring.
This link is for a short-lived web based show from a couple of years ago.
http://www.zerotv.com/content/info.cfm?ContentID=138