Good grief, how the threads go off on tangents. Drink debates now!
I personally have not seen problems with my Pentax DL's ability to focus quickly right after taking a shot. I regularly take several shots in succession. Of course, there are always exceptions when, for one reason or another, it will slow down, but I believe this can happen to any camera (yes, any!) I do rarely use the flash, since IMHO that's kind of the point of a DSLR (I hate the flash "look"), but I've never, ever found myself waiting for the flash to charge.
It looks like the Canon and Nikon folks (along with the Coke and Pepsi folks - bleah, I don't drink anything carbonated, gross) are going to have a rumble at midnight. Once their knife fight is over, you'll only be left with Sony and Pentax and you can sample the glories of in-camera IS!
If only Canon and Nikon existed... I dunno. Some of the stuff Canon does turns me off (ergonomics, getting rid of the second LCD on the XTi, a lot of design decisions, crummy kit lens, etc), some of the stuff Nikon does turns me off (no DoF preview on the entry-level camera, rotating lens on the kit lens, etc), and their clinging to in-lens IS turns me off. (If you want some comedy, go to a Canon or Nikon-only message board and look for someone suggesting that their brand should put IS in the body. It's instant civil war!) I think that I would have to go with a Nikon if I could only choose one or the other. But I dunno. All the DSLRs will produce lovely photos. (I got some nice very-low-noise 1600ISO photos at Howe Caverns yesterday, anyone who assumes that the Pentaxes produce high levels of noise at 1600 hasn't used one.) So if you take IS out of the equation, it comes down to ergonomics and the lens line-up.
I was rather perturbed by a Canon ad in the new Road & Track, for the XTi. At the bottom, it has a list of a few of the big features - "over 50 lenses available" (is that supposed to be an impressive number?), "image stabilization"... WHAT? C'mon, Canon. That's very disingenious and I think even the most hardcore Canon fans would have to agree. The XTi certainly does not have that. Certain lenses do - but not the camera itself, and chances are that most buyers will never have a lens with IS.