Digital Single Lens Reflex: Pentax K1, K3, K5, K20d, K100ds(IR converted)
Mirrorless Interchangeable Lens Cameras: Pentax Q7
Point and Shoot: Pentax OptioW80, MX-1
35mm: Pentax PZ-1p (2 bodies), Pentax MZ-5n, Minolta X-700, Pentax MZ-S
Medium Format: Pentax 645, Pentax 645N, Pentax 6×7, Rolliflex (2), Minoltaflex
Large Format: Graffic View II
Lenses as of the end of 2014
There are actually quite a few more but this gives an indication of my small collection.