Originally posted by lttletimmy
Any manual SLR camera. If you're in the market for one I recommend a Canon AE-1 or F1, or a Nikon FM2. I've got 2 canons, an AE-1 and an FTB, and they've been awesome for me. If I ever get a scanner i'll post some pics, i've done 10 min shutters before, but it's really all about the eye than about being able to hold a shutter open for a long time 
I have an FTB and an A-1.
My girlfriend's got an AE-1 Program. That's a nice camera too.