I've recently been using a Nikon N2000. Like new condition, $40. Works perfect, and takes all sorts of fantastic lenses.
Only bummer is the shutter speed readouts in the VF are a little hard to see in bright light. Has exposure lock which is super handy, and the built in motor winder takes AAA batteries.
It's weird, I like using this more than my F3P. I guess it's because the pics look exactly the same that come out of it! But it costs pennies in comparison.
Then... I picked up a Nikon FG in my local shop, just window shopping. The size of the EM but with more features. Only thing missing for me is the exposure lock function, but I would get around that by switching to manual.
Love the tiny size, love the weight, love the design - especially of the wind on lever!.
This is also why I really like my Pentax SuperA and ME series. Tiny but excellent. And cheap.