Stanley Cup playoffs: Montreal Canadiens at Tampa Bay Lightning (5 p.m., CNBC); Boston Bruins at Detroit Red Wings (6 p.m., NBCSN); Colorado Avalanche at Minnesota Wild (7:30 p.m., CNBC); San Jose Sharks at Los Angeles Kings (8:30 p.m., NBCSN)
NBA playoffs: Indiana Pacers at Atlanta Hawks (5 p.m., NBATV); Oklahoma City Thunder at Memphis Grizzlies (6 p.m., TNT); L.A. Clippers at Golden State Warriors (8:30 p.m., TNT)
Big Bang Theory (7 p.m., CBS/Ch. 2): Sheldon does something spontaneous. Which really ticks off the women.
Parks and Recreation (7 p.m., NBC/Ch. 5): Leslie makes a huge decision about her future. (Season finale)
Hell's Kitchen (7 p.m., Fox/Ch. 13): Contestants have to create a unique pizza dish.
The Vampire Diaries (7 p.m., CW/Ch. 30): Enzo finds out what happened to his lost love on election day 1960.
The Millers (7:30 p.m., CBS/Ch. 2): Nathan pitches a childrens show based on Tom's imaginary comic book.
Two and a Half Men (8 p.m., CBS/Ch. 2): A money-making scheme falls in Alan's lap.
Grey's Anatomy (8 p.m., ABC/Ch. 4): Bailey makes a bold decision.
American Idol (8 p.m., Fox/Ch. 13): Contestants face elimination.
Reign (8 p.m., CW/Ch. 30): Mary's uncle delivers bad news about her mother.
Surviving Jack (8:30 p.m., Fox/Ch. 13): Frankie quickly regrets introducing his girlfriend to his family.
Elementary (9 p.m., CBS/Ch. 2): Mycroft makes an unexpected and unwelcome appearance.
The Black Box (9 p.m., ABC/Ch. 4): New series about a mentally unstable neurosurgeon.
Vikings (11 p.m., History): Ragnar and Horik have different ideas about their trip to Wessex.
Sirens (11 p.m., USA): Johnnny gets payback for all the practical jokes he's played.