Salvage Vanguard Theater is a local indy theater group Skye turned me onto that puts on a variety of interesting shows. I've only been a few times, but they've always been enjoyable. (Flawed sometimes, but enjoyable and interesting.)

My fave show of all time, though, was The Intergalactic Nemesis. It's a live show done in the style of a radio serial, replete with sound effects by genuine foley artists. It's space opera cheeseball-tastic. I still need to see part 3; I suspect a CD purchase is in my future.

(Thanks, Ben, for the link!)