House, Dane Cook on Hawaii Five-0, and a Pretty Little Liars marathon

1 p.m., ABC Family

Pretty Little Liars

Spend your President’s Day watching a seven-hour PLL marathon! And then, after that, watch tonight's new episode: At 8 p.m., Aria (Lucy Hale) and Ezra (Ian Harding) bond during the school play while the rest of the girls stress out over trying to learn more about Alison’s murder.

8 p.m., FOX

House

House (Hugh Laurie) decides to participate in Career Day at a local school, and he ends up sharing medical secrets with the students and getting relationship advice from a couple of fifth-graders.

9 p.m., CW

Gossip Girl

It’s a happy day for Eric (Connor Paolo), who's celebrating his 18th birthday—but it's a confusing day for everyone else. Serena (Blake Lively) can’t decide between her family and Ben (David Call), Blair (Leighton Meester) is facing some tough career choices, and Chuck (Ed Westwick) distances himself from Lily (Kelly Rutherford).

10 p.m., ABC

Castle

In the first installment of this two-part episode, Castle (Nathan Fillion) and Beckett (Stana Katic) investigate the murder of a cab driver who was involved a messy conspiracy theory, and a hard-ass federal agent (guest star Adrian Pasdar) steps in to help out the precinct.

10 p.m., CBS

Hawaii Five-0

Danny (Scott Caan) receives a visit from his younger brother, Matt (guest star Dane Cook), who is actually the target of an FBI investigation. Plus, Steve (Alex O’Loughlin) tracks a bomber who's seeking revenge.

Also on the airwaves...
The Bachelor, 8 p.m., ABC
How I Met Your Mother, 8 p.m., CBS
Chuck, 8 p.m., NBC
90210, 8 p.m., CW
Mad Love, 8:30 p.m., CBS
The Chicago Code, 9 p.m., FOX
The Cape, 9 p.m., NBC
Greek, 9 p.m., ABC Family
Intervention, 9 p.m., A&E;
Top Gear, 9 p.m., BBC America
Bad Girls Club, 9 p.m., OXYGEN
Being Human, 9 p.m., Syfy
Cake Boss, 9 p.m., TLC
Mike & Molly, 9:30 p.m., CBS
Harry’s Law, 10 p.m., NBC
Heavy, 10 p.m., A&E;
Tabatha’s Salon Takeover, Season 3 finale, 10 p.m., BRAVO
Skins, 10 p.m., MTV
19 Kids and Counting, 10 p.m., TLC
NHL Hockey: Capitals v. Penguins
NCAA Men’s Basketball: Syracuse v. Villanova, Georgia v. Tennessee, Arkansas Pine Bluff v. Prairie View A&M;, Oklahoma State v. Kansas, Maryland Eastern Shore v. Morgan State
NCAA Women’s Basketball: Georgia v. Tennessee, Texas v. Iowa State

What are you watching tonight?


Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom

Comments (34)
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Mr Sunshine, Hawaii Five-0, Castle (annoying that they're scheduled against each other)
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Watch PLL and then puke ur guts up! The big secret??? Its how a show about nothing keeps peoples attention! Sorry Seinfeld!
Also, Mad Love(Big Bang.....) its 2011, we don't need laugh tracks anymore! If ur funny we will laugh or grin or snicker, if not then get the he## off the airwaves!
5-0, yummy Grace Park!!!!!!! And Castle always rocks!!!
Daily show, i miss you!!!!
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Chuck, Two and a Half Men, Mike & Molly, Castle, Hawaii Five-0 (online), etc...
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castle chuck lpretty little liars house
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Pretty Little Liars, House, Gossip Girl, How I Met Your Mother, Chuck, 90210, Mike & Molly, Heavy :)
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PLL, HIMYM, and Being Human
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House, Castle, How I Met you Mother and The Chicago Code.
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Castle, Castle, Castle
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PLL, Chuck, Being Human, Greek, Castle, and Hawaii Five-0
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Castle and PLL
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House, The Chicago Code, Chuck, Being Human (US), and Hawaii 5-0.
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looking forward to HOUSE and Hawaii 50
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House, Chuck and CASTLE!!!
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90210, PLL, Hawaii Five-O
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chuck, gossip girl, and hawaii five 0, then himym greek and 90210 online
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Castle and Hawaii Five 0 (though I must say: Dane Cook??!!)
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Hawaii Five-0,Being Human, and Skins, (:
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PLL, GG,90210, Bachelor
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Castle & Hawaii Five-0!
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chuck and will catch up to house, and being human another time.
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House or PLL.
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Castle and HIMYM
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Castle, House and HIMYM
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Chuck, HIMYM, The Cape, The Chicago Code, Being Human (US), Castle and Hawaii Five-0 .............. I hate mondays :D
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Chuck, Being Human, Castle.
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House,Castle,Hawaii Five-0,How I Met Your Mother, ,90210, The Chicago Code,Mad Love, Being Human, Mike & Molly,Skins,
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Chuck, 90210, HIMYM, Mad Love, Gossip Girl, Being Human (US), Mike & Molly, Castle, Hawaii Five-0, and The Cape
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Greek, Chuck, PLL, HIMYM, house
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Chuck, Pretty Little Liars, Hawaii Five-0, Mike & Molly, and Two and a Half Men
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Oh yeah forgot Outcasts!
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Mad Love, House, 90210, Chuck, Being Human, Gossip GIrl, Harry's Law, The Chicago Code - but happened to The Cape, Two & A Half Men
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HIMYM and maybe Mad Love.
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Five-0 and Castle
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Nothing good on, except Mother and Top Gear.
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