I recently moved back to Philadelphia area (from Ontario) ...will be moving to the city in a month or so. Anyway, Philadelphia's not particularly a great film city as far as seeing classic films on 35mm goes (especially when compared with New York or Toronto, say), but there are a few good spots:
Film @ International House - uncomfortable seating, but it has a good atmosphere, and sometimes plays some really good stuff and always plays very hard to see stuff.
Bryn Mawr Film Institute - this one's new - never been there before, but seem to have some decent stuff upcoming
Villanova University Cultural Film & Lecture Series - havent been to this either, but definitely plan on attending The General, Weekend, and Ten in this series.
And there's the
Ritz of course - for the more independent stuff, or the more "respectble stuff", which seems to include
The Devil Wears Prada and
World Trade Center. Anyway, they've got several theatres in the city, and they actually do play some really good newer stuff (though I wish they would at times be more ambitious in their programming). Oh, and the seating here is very comfortable.
From my understanding, those are the main venues within the city or just outside. There are a few other pretty good theaters, but I haven't been to them as they're a bit further away. For that and other info, check the bottom link
here for repertory films.
And if this doesn't suffice, New York is only 2 hours away.
If you're ever up for catching a film sometimes, and would like someone to go with, send me a pm. I was hoping to meet up with some cinephiles upon my return back here.
As far as the reissues of the Truffaut, Godard, and Tati goes - I wouldn't be surprised if they showed up at the Ritz or the ihouse, but then again, I wouldn't be surprised if they didn't...either way, it'll be a few months away I assume...you might want to try contacting the ihouse film programmers and request these films though, as they're open to suggestions.