U.F.O. Sightings!

Dick Van Dyke spots a flying saucer, Bob Newhart contemplates the likeliness of aliens, and Scott Baio solves the mysteries of the universe... This week's trope is UFO Sightings! Here's what we're watching:

• The Dick Van Dyke Show S5 E3 "Uhny Uftz"
• Newhart S1 E19 "Heaven Knows Mr. Utley"
• Charles in Charge S2 E19 "U.F. Oh No!"
• The Hogan Family S3 E21 "Close Encounters"