Just to bring up the rear (haven't been on the forums in 10 days),
Chen's baby daddy = Morris Chestnut (The Best Man, anyone?)
As far as sexual preferences go, just about everyone has slept with everyone else by now with all the cross-breeding going on there.
The tumor is just too much. They can't get through a single episode without a lingering personal drama. They might as well have an entirely new cast next season if they even come back (remember my prediction about Michael Michele).
-SUO