Who Do You Think You Are (8pm, NBC) - Jason Sudeikis ("Saturday Night Live") mines for information about his father's family history.
The Finder (8pm, Fox) - In the season (and series) finale, Walter's older brother asks him to visit their dying father, whose last wish is for his son to use his gift to find the love his life, their mother.
Fringe (9pm, Fox) - In the conclusion of the two-part Season 4 finale, the Fringe team is desperate to prevent a catastrophic event that could cause mass death and destruction.
CSI: NY (9pm, CBS) - Season 8 concludes with Mac fighting for his life after being shot while the CSIs search for the shooter.
Blue Bloods (10pm, CBS) - The second season concludes with Frank (Tom Selleck) attempting to stop a biological-weapons attack on the city, while trying to keep it a secret from his family on Mother's Day. Meanwhile, a long-standing conflict between Danny and Jamie comes to a head.
Common Law (10pm, USA) - In the premiere episode of a new series, odd-couple detectives Wes and Travis begin couples therapy on their New Age captain's orders in an attempt to salvage their crumbling partnership. Adrienne says it's kind of blah -- here's her full review.