I don't know of any falls/tossing in Tai Chi. There's not even (really) punches and kicks. (In fact, that's why I went to Japanese Karate, I wanted to throw people and punch and kick. ;-)
Most instructors are willing to talk with potential students and can show you exactly what movements are involved. (In fact, most good ones will insist on it).
It's not a bad art...and it's harder than it looks, but I prefer doing a move and watching someone fly though the air.