Can anyone tell me if I need to watch the movie first before I watch FMA Brotherhood?

FMA Brotherhood is just the remake of the 2003 FMA. 당신 don't need to watch the movie first. If 당신 want to though; go for it!

Just to clear up, FMA: Brotherhood is 더 많이 like an original since it faithfully sticks to the story in the manga. The 2003 version deviated from the 망가 after a few episodes. So there's no link that stops 당신 from watching Brotherhood 또는 the movie in any order 당신 like :)