I don't feel like scouring the internet for videos, but some of my favorites are:
Dan Aykroyd as the representative of the costume company showing off the new Halloween line ("The Invisible Pedestrian", lol)
Richard Pryor taking the word-association test ("N.igger", "DEAD honky")
The Velvet Jones School of Technology ("I Wanna Be a Ho")
The Bass-O-Matic
Julia Child cutting her finger and spewing fifty gallons of blood
The Shooting of Buckwheat
With a name like Fluckers...
Jane Curtain and Dan Aykroyd as the adverserial newscasters ("... Jane, you slut...")
Eddie Murphy as the Bob Marley-eaque reggae singer doing "Kill the White People" for an Elks Lodge or similar group.
Eddie doing James Brown ("In the hot tub!")
SpaceAce