yes, George made alot of other stuff.
Indiana Jones (all of em)
THX 1138
American Grafiti
Those are the big ones.
And Stephie, Joss Whedon is a director. He directed Firefly (tv series) and a movie based around Firefly that's coming out soon,
He's also directing Wonder Woman.
Besides that, he wrote for Aliens 4 (alien resurrection), Toy Story and did the screenplay for Titan AE.