Knocked Up
Seth Rogan has made quite an impressive stance on the comedy scene. When he acted in Knocked Up in 2007, he garnered a lot of attention. Making references to Munich was all improvised, and the reason for that is that director, Judd Apatow, encouraged his actors to make up lines as they went along.
Aliens
Making a sequence after a great original hit is difficult work. But that wasn’t an issue for Aliens because they hit the nail on the head. Bill Paxton wasn’t in the original, but when he came for the sequence he truly delivered. It was his genius improv that delivered the line, “Game over, man!”