30 Rock
S04E13
“Anna Howard Shaw Day”
Liz Lemon schedules dental surgery to avoid Valentine's Day entirely.
Brooklyn Nine-Nine
S01E13
“The Bet”
Jake wins the bet; Amy suffers the worst date ever. Where it all began.
Parks and Recreation
S02E16
“Galentine's Day”
Leslie invents the best fake holiday on television: ladies celebrating ladies.
The Office
S02E16
“Valentine's Day”
Phyllis drowns in gifts while Pam gets… nothing. Agony and comedy in equal parts.