I had to reply to show support for this thread. I've been a member of OverLooked ReMix now for about 3 years and it's been a lot of fun. I've met alot of cool people, participated in some crazy forum conversation, and overall just had a blast. The music over there is incredibly unique and it's quite refreshing to see what remixers can come up with when they're not trying to sound professional, or when they just want to do something out of the ordinary.
The site features songs with all kinds of everyday things used as instruments, lots of weird sound effects, terrible singing, or funnyass lyrics. It's just a really cool site and their forums are filled with fun people.
OLRmageddon (the OLR monthly contest) is going on right now featuring cats and Nintendo 64. I'm looking forward to hearing what crazy stuff people come up with.