you guys dont understand how it works. right now with the t2i, 7d, etc, you get your 1920x1080 (or 120x720) picture by using the entire sensor, and just dropping pixels. the t3i zoom allows you to crop to a 1920x1080 (or 120x720) square in the center of your sensor, this increasing your crop factor by a ton and giving you longer range lenses. this is not something you could just do in post.
but to whoever said that this has a "faster sensor", what on earth does that even mean? and no it doesnt, its the same 1.6 crop cmos in canons other hddslr's.
if you dont see yourself using the crop feature at all, honestly you are better off spending less and getting the t2i. a swivel screen is not worth 200 bucks, and magic lantern makes the t2i a better camera for video than the 7d or 60d.