I did a horrendous thing the other day and worked out how much it would cost me to move to canon. They're kicking butt with video.
Not a big problem for most people, and I still wouldn't recommend that you get an SLR 'instead of a camcorder', but I shoot a hell of a lot of video as well as stills, and the 7D just sounds great - the footage out of it can be stunning in the right hands, you can overcrank it to 50/60fps for awesome slomo stuff...it just makes the
£3500 sony Z1 that I normally shoot with look pants for single camera controlled stuff (so promos, short interviews, ads etc - this isn't a camera for reportage filming, but for stuff where you have control of the scene...just damn.)
Downside is the ergonomics of the device, not great for video, but that'll always be an issue for slr format cameras - canon need to bung a 5d2 inside the body of one of their HDV pro video cameras, with an EF mount, it'd be awesome - but they need to do it before the red scarlet comes out.
Technically, and for stills, nikon do seem to be winning, the complaints that people have with the 1D4 even.... people just don't have with the D3 line. The AF is fantastic, ditto the low light performance, the ergonomics are the best...they just need to sort their video out