I could bring whatever Keg I'm working on at the time -- provided it's not horrible :P I just kicked the DFH60 clone, have been carbing the Hop Slam (which tastes NOTHING like hopslam), and may have a two-hearted ale clone carbed in a keg by the time of the meeting.
I can definitely bring a keg; I just don't have a portable tap. They're all ball-lock cornies.
I think it also depends on how many peeps we have. Kegs may be overkill
I was originally planning on just bringing a 1/2 gallon growler.