Haven't seen many of his films, heard a couple of his songs. Overall I like him. I think one of his worse films was maybe Shrooms. Couldn't get into it as a horror film. Found it a little more comic actually.
I first saw him in Holes and Shrooms, personally I liked Holes better. Had a better plot.
His two songs I heard were Gone and Mississippi. They were both pretty slow songs and even though he isn't as famous as a musician as he is as an actor they were still very nice songs.
The genre was somewhere along the lines of blues I think.