The MKII is a recent pick up I made having found it with low use locally. Bought it mainly for low light events that I shoot. Everyday walk around though, I still use my 40D 90% of the time.
Movie wise I'll never use it for that. Yes it does autofocus, but there's no continuous focus option and to be honest the focus is so slow.
It's a nice evolving feature, but outside having DOF which of course if very nice, it sucks. Especially when compared to an actual video camera. If I were to do video production work, I'd drop $4-5k on an entry level Panny.
The drawbacks are 12mins. in 1080P mode Works only in Live View Mode Sound is Mono Only, and it picks up even the slightest noises, like lens IS, aperture changing and lenses autofocusing. Even my USM lenses cause sounds to bleed through. You wouldn't notice it at say a kids recital, but then the sound is mono and again, I like to hear the full 5.1 my Sony HD Cam captures there. Even Canon recommends and external mic.
Overall though, the camera is amazing. I still use my 1DMKII for sports though as while the 5 series is nice, sports isn't it's forte.