I just looked him up and it turns out I haven't seen anything else by him. That doesn't stop "Badlands" from being one of my favorite movies -- of any genre.
"Languid and deliberate" are two of the things I really liked about it. It seemed to fit with the simpleminded anti-heroes it was about. I love any movie with a narrator and Sissy Spacek did an amazing job with them.
By the time I saw it I was already heavy into photographers like Mary Ellen Mark, Robert Frank, and Larry Clark and "Badlands" seemed like their photos come to life.
Reading up on Malick I'm wondering if he might have known Larry Clark. They were born in the same year and both lived in Oklahoma....