Here’s what’s on CBS, NBC, ABC and FOX in primetime HD tonight (July 21, 2011). CBS is showing a new episode of “Big Brother 13.” NBC is showing a new episode of “Love Bites.” ABC is showing new episodes of “Wipeout,” “Expedition Impossible,” and “Rookie Blue.” And, FOX has a new episode of “So You Think You Can Dance” at 8:00 PM.
8:00 PM
CBS
The Big Bang Theory
“The Cohabitation Formulation” Repeat
NBC
Community
“Early 21st Century Romanticism” Repeat
ABC
Wipeout
“You’re All Acting Like Babies!” NEW
FOX
So You Think You Can Dance
“2 of 10 Voted Off” NEW
8:30 PM
CBS
Rules of Engagement
“The Bank” Repeat
NBC
Parks and Recreation
“Fancy Party” Repeat
9:00 PM
CBS
Big Brother 13
True, NEW
NBC
The Office
“PDA” Repeat
ABC
Expedition Impossible
“A Blind Man’s Nightmare” NEW
FOX
Glee
“Rumours” Repeat
9:30 PM
NBC
30 Rock
“Double-Edged Sword” Repeat
10:00 PM
CBS
The Mentalist
“Red Queen” Repeat
NBC
Love Bites
“Modern Plagues” NEW
ABC
Rookie Blue
“Stung” NEW
Data provided by TitanTV.
