As the other one who already replied; I love my 7D - and for me it is worth every penny! And the same goes for me about already having been married to a brand. But for me it is not all my gear that makes up this marriage, but the fact that I do not feel comfortable with other cameras than Canon. Just feels a bit wrong for some reason.
When that being said, the results I get from my pictures are just perfect. When I am not happy with what I get, I can never blame the camera - and the boy behind it have to take the fall for any bad results!

The quality of videos are great two, although the sound quality falls a bit short compared to the image quality. But this is to be expected for this type of camera.
So far I am still experimenting with my camera as I have had little time to play around with it as much as I would like. Had it with me to some MotoCross cup, and it did an awesome job. To have up to 8 pictures per second let me really capture the jumps and mud flying around - and don't miss any details in between each shot. The processor are very fast too, so I can keep the burst shooting for several seconds without choking the camera.
Another thing I can mention is that the camera is a little bit bigger than some of the other Canon EOS series. Someone I talked to said that he did not buy the 7D because he heard that it was bigger than other models, but for me the size was one of the things that made me go for the 7D in the first place. I just love how it feels when I am holding it, and the size makes it very well balanced. The magnesium body is also a nice touch, and I feel a bit more safe when I am out shooting and the weather is not playing nice.
I do not think you will have any second thoughts if you decide to buy the 7D!
Edit: someone already beat me to it about the size

But reading his post, and the word lighting, made me think about one more thing that I love about this camera; The wireless flash trigger that are built in to the 7D's body. Can make me use the flash off camera without any other gear. This is an awesome touch to an awesome camera!