Castle, Life Unexpected, and How I Met Your Mother

8 p.m., CBS

How I Met Your Mother

Lily (Alyson Hannigan) doesn't believe that Marshall's (Jason Segel) co-worker (guest star Amanda Peet) kissed him.

8 p.m., FOX


In part two of the Season Day 8 premiere, Jack (Kiefer Sutherland) follows a lead from Chloe (Mary Lynn Rajskub) about the assassination attempt, even though CTU head Brian Hastings (Mykelti Williamson) disapproves. No one tells Jack Bauer what to do. Duh.

8 p.m., USA

Tom Brokaw Presents: American Character Along Highway 50

Tom Brokaw takes a roadtrip (well, sorta) along Highway 50 and investigates how people along the route are coping with economic, political, and cultural change.

Series premiere, 9 p.m., CW

Life Unexpected

In the pilot, Lux (Britt Robertson) meets her birth parents (Shiri Appleby and Kristoffer Polaha) for the first time after being in foster care for her whole life.

10 p.m., ABC


Castle (Nathan Fillion) and Beckett's (Stana Katic) latest investigation leads them to clues about the unsolved murder of Beckett's mother.

Also on the airwaves...
The Bachelor, 8 p.m., ABC
One Tree Hill, 8 p.m., CW
Chuck, 8 p.m., NBC
The Secret Life of the American Teenager, 8 p.m., ABC Family
Accidentally on Purpose, 8:30 p.m., CBS
Two and a Half Men, 9 p.m., CBS
Heroes, 9 p.m., NBC
Intervention, 9 p.m., A&E;
Make It or Break It, 9 p.m., ABC Family
American Pickers, Series premiere, 9 p.m., HIST
Cake Boss, 9 p.m., TLC
The Big Bang Theory, 9:30 p.m., CBS
CSI: Miami, 10 p.m., ABC
Hoarders, 10 p.m., A&E;
NCAA Men's Basketball:Syracuse v. Notre Dame, Southern v. Mississippi Valley State
NCAA Women's Basketball:Connecticut v. Duke
NBA Basketball: Suns v. Grizzlies, Mavericks v. Cavaliers
NHL Hockey: Wild v. Stars

What are you watching tonight?

Follow writer Stefanie Lee on Twitter: @StefAtTVDotCom

Like on Facebook