I guess you all missed the most obvious one :
OCR : OverClocked ReMix
Here are the other ones I can think of...
shittyjudgefgt : Quite self-explanatory...
WIP:O : Works In Progress : Other. Former name of the Non-ReMixes forum. (probably won't be used a lot anymore, though... well, it wasn't used a lot to begin with, actually)
CMC, TOMC, PRC, ORC, FLMC, OVGMC... stuff that usually ends with -RC (Remix Competition) or -MC (Music Competition) : Various contests more or less regularly held in Comwhatever (formerly GenDisc) as a lack of a dedicated forum yet.
EDIT :
I think that's OC ReMoved you're talking about. OLReMixes are bad on purpose, and most of them would never had made it past the DJP auto-rejection email.