Bought a Pentax Auto 110 with 18mm and 24mm lenses last night, should be here in the next few days.
Completely automatic exposure (the shutter and the diaphragm are one and the same, and therefore higher shutter speeds also stop it down - with speeds 1/60s and up, IIRC, the shutter never fully opens, and the shutter is essentially a two-blade compact camera-style diaphragm,) but manual focus. Because of the shutter, lenses have no diaphragm, and are all f/2.8 - even the 20-40 zoom.
Oh, and it's one of the smallest SLRs ever made, and the smallest SLR system ever made (the three common primes - 18 wide angle, 24 normal, and 50mm tele (the other lenses are a 70mm tele, a fixed-focus 18, and a 20-40 zoom,) and the camera can fit in one hand) - it's significantly smaller than even my PowerShot A560.
Downside is, it shoots 110. (This does give it a 2x crop factor, and because the entire system was designed around 110, everything is TINY. The 24mm lens is the size of a freaking soda bottle cap, apparently.)
I want to find a dead Four Thirds or Micro Four Thirds camera, and graft the electronics onto the back, making a digital back for it. There'll need to be some trickery to get the digital camera to not be pissed off by the lack of a shutter and (in the case of a standard 4/3) mirror, among other things, but I think it's doable. (The lens isn't an issue, 4/3 and u4/3 cameras support a mode for shooting "without a lens" when the lens doesn't have electronics - and, in fact, the Pentax Auto 110 lenses are popular on u4/3 cameras.)