Before there was The Late Show with David Letterman, there was Late Night With David Letterman, and before there was Late Night With David Letterman, there was The David Letterman Show. Which wasn't on late at all.
It didn't run long, just from June to October of 1980, but you can see what was to come in a couple of years. Not to mention what Jay Leno would be stealing in another decade or so.
So, welcome back to Sept. 30, 1980. Today's featured guest, Steve Martin.