Star Wars Holiday Special: 25 WTF Moments

Lumpy then attempts to use his transmitter device to fool the Imperials into leaving their home, but has to watch an instructional video first, where the droid giving the demonstration (played by Harvey Korman, because of course) continually malfunctions.

Rather than allow Korman to act out the errors himself, it's mostly achieved through goofy editing, such as looping the same movements in order to make them look more robotic, and adjusting the pitch of his voice.

The scene goes on far longer than anyone needed it to (something of a broken record when talking about this show) and generates not a single laugh.