I'd say go with the 60D for the type of content you're planning on capturing.
I've been using the 5D for the same thing since it came out and was tired of carrying an EX3 video camera with me on flights (I always travel with a backup camera & prefer to shoot interviews with 2 cameras anyway for editing reasons). Anyway, I was about to get the 7D when the 60D came out so I grabbed it instead and really like it. The build quality is no where near the 7d so if you were doing tons of outdoor shooting I'd go that route but remember your lenses will/would also need to be L series to handle weather. Also, 7d has no manual audio controls so that's one advantage of the 60d. The tilting screen is the other. For 2 camera interviews it is very handy to tilt the viewfinder so you can see it while you're standing behind the other camera - very annoying for subject to see you walking over to other camera while they are trying to maintain eye contact with interviewer - as well of course, useful for low/high shooting angles for other stuff looking over protest crowds etc.
Advantages over Rebel line are significant:
Build quality, same batteries/chargers as 5d & 7d if you ever decide to get a 2nd body, and biggest is it's ability to shoot native ISOs (160,320,640 etc) which is essential for video IMHO for lowest noise.
Anyway all that to say, i'm very happy with the 60D considering it's price/options, but don't forget to budget for all the other 'little' things you'll need that add up - like mics, audio recorders, good headphones, ND filters for outdoor shooting, fast(ish) SD cards etc., so factor those extra expense in as well.
Good luck!
