I didn't, the movie does stand on it's own enough to give you an impression of what's going on in the wider Verse without having to have the full details of the characters back stories, of course having those back stories does lend some additional weight to some of the stuff that happens to certain characters but the most jarring thing between watching the movie first and the TV show second is Rivers abilities (her fighting abilities.) I won't go in to too much detail but seeing the movie and then seeing the TV show I was a little dis-appointed in that aspect.