Meeting the Ex!

Bob Newhart proceeds with caution, Coach gets a blast from the past, and Tim the Toolman Taylor may have invented "ghosting!" This week's trope is getting a visit from the ex! Here's what we're watching:

• The Bob Newhart Show S1 E5 "Goodnight Nancy"
• Coach S1 E8 "Parents Weekend"
• Home Improvement S2 E22 "Ex Marks the Spot"
• My Name is Earl S1 E21 "The Bounty Hunter"