Back Then:
Bel-Aire. Beacon East. The outside theater at Eastland [[they wouldn't turn the lights all the way off at the inside theater.) Woods Theater. Shores Theater for cheap movies [[saw Goldfinger there once and the film broke just as Bond was trying to disable the nuclear bomb at the end.)

Now:
E-Magine - expensive, but we don't see movies that much, the "luxury" seating is fantastic, and they seem to maintain the place pretty well
Redford - For oldies
DFT - For variety

I've heard the Alamo Drafthouse opened a spot in Kalamazoo, which is pretty exciting. Hopefully they open a branch somewhere in Detroit.