On TV Tonight: Friday March 9, 2012

NET 8PM 8:30PM 9PM 9:30PM 10PM 10:30PM
ABC Shark Tank Primetime: What Would You Do? 20/20
CBS Undercover Boss The Mentalist Blue Bloods
CW Nikita (R) Supernatural (R)
FOX Kitchen Nightmares (R)
HBO Real Time with Bill Maher
NBC Who Do You Think You Are? Grimm Dateline NBC
MISC Merlin (Syfy)
Spartacus: Vengeance (Starz)
Portlantia (IFC)

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