2200 Market Street
big, clean, old movie theater right downtown. $7 to get in (and off!). can be hit or miss, tho - you may have to be patient. there's usually a dozen or so guys there at any given time. if you hang out in the back, you can either stand next to someone and give a bj, or wait till someone comes up to you and get a bj. it's the only place i know of without trolls/homeless (it's not open all night). good place to hook-up with younger guys (college age +) who've been out drinking and are looking for a little release. weeknights seem a bit more crowded than weekends, although after 10 on fri and sat nites can be very pleasantly crowded with drunk boys; sundays are always good, as is anytime following a philly sports event.
Crowd: average str8 dudes, younger to 30s (a lot of college guys); drunk guys looking for a release; m/f couples (they even have rooms/booths for couples in the front of the theater)
Neighbourhood: Center City, West