Ben,
Sorry to see you parting ways with Pentax in an official capacity. We know you love the cameras and surely you'll shoot with them when appropriate. Best of luck regardless.
Now...
Originally posted by JMS ...the Pentax system simply doesn't support things like sports...
I will repeat once again (for the millionth time...)...
PENTAX CAN SHOOT SPORTS!
Just about any modern DSLR is superior to the film cameras used in the 70s when it comes to frame rates and autofocus. The only things that Pentax doesnt have for the sports shooter are high frame rates and a superior motion tracking auto-focus system. This does make things tougher but it is not insurmountable. Please note, that to get those features in a Canon or Nikon you have to spend at least twice what a K20D costs. If you are an experienced sports shooter, you can shoot sports with a Holga. The high end CaNikons just make it easier to some extent.
This shot was done with an even less capable camera than the K10D... my K110D...
...click for larger version...
Now, tell me "Pentax doesn't support things like sports"...
I'll admit that I don't have any experience shooting "unaugmented human" sports such as football or basketball, but the K110D and the K10D do just fine with bicycle, motorcycle and automotive sports/racing. Knowing your subject, preplanning and careful shooting are more important than just blasting away at 8FPS. Much more and you might as well just shoot video...
Of course, Pentax does not go after the sport shooter market, much less sponsor a sports photographer, but that doesn't mean the cameras cannot get into the arena...