Full Metal Jacket is a classic Vietnam war movie. I think it was by Stanley Kubrick. In anycase, FMJ is definitely worth you watching.
FMA on the other hand is also awesome, but I see you already have watched that. However, the ending pisses me off, and the movie -WILL NOT- be tying up those loose ends. I've heard it will be placed in between a season, a la "Knocking on Heaven's Door" for Cowboy Bebop. But even if it wasn't, there is too much to be covered in a two hour movie. I think it deserves a season unto itself, or leave the ending hanging like that otherwise.
Also, to whoever gave me my title, I am forever in gratitude, you rock to the greatest extent. I wish to extend my humble thanks to the mighty admin who bequeathed this name upon me. Cheers to you, noble admin!