however its not as simple as an actual video camera. for one, dont expect to just be able to hand it to your homies and have them film for you, without some camera knowledge they wont crank out great shots. AF is simply too slow to use, so you have to be good at focusing on the fly, or stop down to get a deeper D0F. Stabilization (tripod, glidecam, etc) is also essential because the camera is really too light to hold very steady handheld. your tripod CAN double as a ghetto-glidecam, but be prepared for those expenses.
finally your camera is only as good as the glass in front of it, so be prepared to shell out for some nice primes or an expensive fixed aperture zoom. however some of that cost can be reduced by hunting for old pentax, nikon, or canon glass on ebay and getting an adapter ring for around 10 bucks. just stay away from anything that needs glass in an adapter (aka Canon FD mount, and i believe some nikon mounts as well).
im not trying to say the t2i or similar camera is wrong for you, just make sure you understand the limitations before you drop 1k plus on a setup.
there's a certain point where it neither looks good nor functions properly...that's when you know you look steezy - no_steeze