Career went straight to hell after the 80s
What a drop-off he had after the 80s. In the 70s and 80s he directed such hits as The Blues Bros, Trading Places, Animal House, An American Werewolf in London, Spies Like Us and Coming to America.
And then, somehow, by the 90s he couldn't make a hit to save his life, and by the turn of the 21st century his career was basically over.
It's always strange to me when a clearly-talented director just falls off like that.