8 p.m., ABC
8 p.m., FOXHugh Laurie) and his team treat a man who lives as a knight in a reclusive Renaissance-themed community. I hope there's jousting involved!
10 p.m., ABCNathan Fillion) and Beckett (Stana Katic) investigate the death of a thief—and Beckett falls for the cop (guest star Michael Trucco) assigned to work the case with them.
Season 3 finale, 10 p.m., FXRose Byrne) and Tom (Tate Donovan) try to find the Tobin money. Sounds easy enough, right?
10 p.m., TRAVEL
Also on the airwaves...
How I Met Your Mother, 8 p.m., CBS
10 Things I Hate About You, 8 p.m., ABC Family
Rules of Engagement, 8:30 p.m., CBS
24, 8 p.m., FOX
Trauma, 9 p.m., NBC
Intervention, 9 p.m., A&E;
Romantically Challenged, Series premiere, 9:30 p.m., ABC
CSI: Miami, 10 p.m., CBS
Nurse Jackie, 10 p.m., SHO
United States of Tara, 10:30 p.m., SHO
MLB Baseball: Cubs v. Mets
NHL Hockey Playoffs: Sabres v. Bruins
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom