Primetime Preview: Season Finale of House

Having already thrown House and Cuddy into bed together (or at least up against the wall) last week, how will House ends its fifth season? We'll find out tonight...

• 8:00 p.m. The final four compete on Dancing with the Stars (ABC); the season finale of House (Fox); it's flashback time on Gossip Girl (CW); the second season finale of The Big Bang Theory (CBS).
• 8:30 p.m. Barney doesn't want a speeding ticket on How I Met Your Mother (CBS).
• 9:00 p.m. It's 5 a.m. on 24 (FOX); Nathan wait to hear from the NBA One Tree Hill (The CW); Alan and Chelsea bond on Two and a Half Men (CBS).
• 10:00 p.m. The first season finale of Castle (ABC).