A friend of mine has the 7D. He's more than happy with it. From the images he's been capturing the resolution is right up there. Given it has HD video capability that's also a bonus. But make sure you have good glass to screw onto it, otherwise you're wasting your money.
With any high end DSLR settings are important and crucial - they can be a bit intimidating sometimes
If you can afford one then I would recommend it highly. They retail here in Oz for about $3800 - that's for the body ONLY. Add a decent lens and there's another $2,000 up...but once you're in that 'zone' you won't look back.
Obligatory link for those who want to see its specs.