Monday’s TV highlights

SERIES

How I Met Your Mother: Season 7 of the sitcom opens with the wedding of Barney (Neil Patrick Harris) to a mystery bride. Josh Radnor, Chris Romanski, Jason Segel, Alyson Hannigan and Cobie Smulders also star (8 p.m. CBS).

The Sing-Off: Eight of the 16 competing groups perform together in the season premiere (8 p.m. NBC).

Dancing With the Stars: Contestants include Metta World Peace (formerly Ron Artest) and Hope Solo; David Arquette, J.R. Martinez and Elisabeth Canalis; reality TV personalities Kristen Cavallari and Robert Kardashian; journalist Nancy Grace, stylist Carson Kressley; talk show host Ricki Lake; singer Chynna Phillips and author Chaz Bono (8 p.m. ABC).

Hell’s Kitchen: The remaining four chefs compete and the winner is announced in the season finale (8 p.m. Fox).

Eureka: The Astraeus countdown is under way in the season finale. Colin Ferguson, Salli Richardson-Whitfield, Trevor Jackson, Erica Cerra, Dave Foley and Niall Matter star (8 p.m. Syfy).

2 Broke Girls: A street-wise waitress (Kat Dennings) takes an inept new waitress (Beth Behrs) under her wing in this new sitcom (9:30 p.m. CBS).

Hawaii Five-0: In the second season premiere Danny (Scott Caan) works to clear McGarrett (Alex O’Loughlin), who awaits trial for the murder of the governor (10 p.m. CBS).

The Playboy Club: This new drama set in the 1960s star Amber Heard, Eddie Cibrian, Laura Benanti, Jenna Dewan Tatum, Leah Renee, Naturi Naughton, David Krumholtz (10 p.m. NBC).

Castle: The season premiere, resolves Detective Beckett (Stana Katic) fate following last season’s cliff hanger. Nathan Fillion stars (10 p.m. ABC).

SPORTS

Baseball: The Angels visit the Toronto Blue Jays (4 p.m. FSN).

Football: The St. Louis Rams visit the New York Giants (5:30 p.m. ESPN).