8 p.m., NBCZachary Levi) and Sarah (Yvonne Strahovski) try to thwart the plans of a group of spies from Spain while traveling through Europe on a train. In the rain. Which falls mainly on the plain.
9 p.m., FOXCherry Jones) enlists the help of a private security firm to help avert the crisis, and Jack (Kiefer Sutherland) asks his old friend Jim Ricker (Michael Madsen) for a marker during one of his missions. I wish I knew what that meant.
9 p.m., CWBlake Lively) father, William (guest star William Baldwin) comes to town—and Jenny (Taylor Momsen) takes the opportunity to comfort Nate (Chace Crawford) when he and Serena go through a rough patch.
11:35 p.m., NBCCommunity and The Soup star Joel McHale (who, I hope, will one day take over his desk).
12 a.m., ABCParty Down star Megan Mullally.
Also on the airwaves...
Dancing with the Stars, 8 p.m., ABC
House, 8 p.m., FOX
One Tree Hill, 8 p.m., CW
10 Things I Hate About You, 8 p.m., ABC Family
Rules of Engagement, 8:30 p.m., CBS
Trauma, 9 p.m., NBC
Romantically Challenged, 9:30 p.m., ABC
Nurse Jackie, 10 p.m., SHO
United States of Tara, 10:30 p.m., SHO
NBA Basketball Playoffs: Magic v. Bobcats, TrailBlazers v. Suns
MLB Baseball: Dodgers v. Mets
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom