How I Met Your Mother, Heroes, and Jon and Kate Plus 8

8 p.m., CBS

How I Met Your Mother

In true Slapsgiving spirit, Marshall (Jason Segel) gives Ted (Josh Radnor) and Robin (Cobie Smulders) a "Slap Bet" slap to use on Barney (Neil Patrick Harris). Plus, Chris Eliott guest-stars as Lily's (Alyson Hannigan) father.

8 p.m., NBC


Noah (Jack Coleman) hosts Thanksgiving dinner, but a mystery guest spooks the Petrellis.

Series finale, 9 p.m., TLC

Jon and Kate Plus 8

In the final episode, the Gosselins take a look back at their last five years on the air. Plus, Kate takes the kids to a dairy farm and Jon takes them to a fire station.

Series premiere, 9:30 p.m., ABC

Find My Family

This brand-new reality show helps people reunite with long-lost family members. In the premiere, a family searches for a daughter they gave up for adoption 29 years ago.

Also on the airwaves ...
Dancing with the Stars, 8 p.m., ABC
House, 8 p.m., FOX
Accidentally on Purpose, 8:30 p.m., CBS
Two and a Half Men, 9 p.m., CBS
Lie to Me, 9 p.m., FOX
Trauma, 9 p.m., NBC
The Big Bang Theory, 9:30 p.m., CBS
Castle, 10 p.m., ABC
CSI: Miami, 10 p.m., CBS
Million Dollar Listing, 10 p.m., BRAVO
Cake Boss, 10 p.m., TLC
Chef Academy, 11 p.m., BRAVO

What are you watching tonight?

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