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. Du don't need to watch the movie first. If Du want to though; go for it!

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