On TV Tonight: Friday May 20, 2011

NET 8PM 8:30PM 9PM 9:30PM 10PM 10:30PM
ABC Shark Tank (R) Primetime: What Would You Do? 20/20
CBS Flashpoint CSI: NY (R) 48 Hours Mystery
CW Supernatural Supernatural
FOX Kitchen Nightmares Kitchen Nightmares (R)
NBC Friday Night Lights Dateline NBC
MISC Real Time with Bill Maher (HBO, HBO Canada)

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