http://www.cineman.ch/en/?setlang=en - Go-to site for Cinemas

Otherwise newspapers are the obvious choice.
Films are always shown both dubbed in German and in the original language (with french/german subtitles) - it says which next to the showtime (Egf are the showings in the original).
There are basically two sets of cinemas; the kult.kino, which has several branches, for more indie or foreign-language films (other than English), whilst all the others - particularly the Pathé Küchlin, which is the one big multiplex - show the more mainsteam Hollywood-ey films.
Most of the cinemas are on the same street, Steinenvorstadt (hence sometimes nicknamed 'Kino-gass' or Cinema-alley), so if you're feeling spontaneous you can just wander down there and see what's on.