The Brother from Another Planet is a 1984 science fiction comedy directed by John Sayles. I had not seen this before, figuring it was just a mindless comedy, but it seems to me to be more of a social commentary.
"We're in for the Self-Actualization conference." LOL!
The Internet Archive has it online:
Roger Ebert likes it. Moria calls it a "marvellously witty little film".