Does anyone here belong to any theater/broadway membership clubs?

I'm looking at joining Theater Development Fund (I am technically a member of a clergy as I got ordained to do 2 friends weddings...I have the proper ID) or TheaterMania.

Are these legit? Any other ones that do great deals or comp tickets?

I'm not much of a theater person, so I don't know how often I'd use it, but I figure I'm living in NYC, I should take advantage of what's out there.