Seriously i have no idea.
is it an american thing?

its an american amazing TV show, hence this is wrongly placed.

i watch it every day on scfi. its about the earth got used up and they taraformed other worlds and the main charicter is the captian of a ship thats name is sarinity(also the name of the movie) and the ships classification is "Firefly". thats the kind of ship it is. and the captian has an inseresting crue, thiers a doctor that the picked up on a planet and he had his sister that the "alience" is after. the alience wanted all the other planets unde thier rule. and the rebles"the planets that rebeled" had a war and lost. so, the captian is alwase running from the alience and is always doing "jobs" for people and they always get into some kind of trouble. anyways its a great show.

we don't have it in the UK

well, the united kingdom has some things that we dont have.

i used to watch firefly but now i watch punk'd

I just bought the dvd's, aint on TV here... anyway the planets didnt rebel... The alliance wanted to take control of all the planets and unify them. Some planets wanted Independance and refused alliance control, the war was large and deadly, eventually the Brown coats resigned and gave up to the alliance's conditions.

I've never seen the DVDs, how come it's on DVD here, but not TV? That sucks.

i've watched it and got it on DVD