In this 1991 episode Dave interviews the popcorn icon Orville Reddenbocker and his Grandson Gary, then Gary Buesy steps in when another guest is a no-show.
1985 Orville Redenbacher Pop Corn Commercial
Purdue Profiles: Orville Redenbacher
To Tell The Truth with Orville Redenbacher Part 1
Orville Redenbacher is back from the Dead
Orville Redenbacher "Old Maids" ad - 1978
Orville Reddenbocker on David Letterman