Edit: If anything, for the latest contribution from Rappin_Jake_Sisko in the comments.
By the Prophets, that's some good shit.
The best one by far though, is this thread here
, which develops into a Star Trek rap battle between Rappin Jake Sisko and Tumak the Skreean (or 2Mak, as he goes by).
It might possibly be the best thing ever on the internet (second only to Dramatic Chipmunk).