I have a few on my share. I never get a chance to finish them though. Chuck D Nades is my tag.
I've got a map called Metroplex (that I need to update with the 2.0 version) which is just me redoing Foundry.
I also have a seperate map/gametype that's basically set up in a small area and the object is to get kills with grenades. Nothing spectacular, just something to waste time