Canon AE-1 Program, mostly 'cause I had mine out today. I bought it off eBay about 5 years ago for a modest amount, not expecting much, but it turned out to be pristine. It even came with the optional power drive. The AE-1P was one of the last great manual focus cameras that Canon made before going to autofocus. The subsequent T-series of cameras was a bust, apart from the expensive T90, which was quickly killed by the new autofocus EOS line.
It is a pleasure to use, but looking through that viewfinder reminded me of an important fact. I have lousy eyes and am very grateful for modern autofocus cameras. I could never go back.