TiVo Guide Week of May 3, 2010 *spoiler alert*

"Chuck" Chuck and Sarah train under the tutelage of a married CIA team (Fred Willard and Swoosie Kurtz), who have a glowing record together but despise one another. In another training mission, Casey must show the spy ropes to an unlikely student---Morgan. Monday at 8 on NBC.

"Biggest Loser: Couples" The final six contestants receive makeovers, which include a $1000 shopping spree and a salon visit with stylist Jonathan Antin. After the transformations, the players reveal their new looks to family and friends and attend a concert by Ashanti. Later, the contestants are suspended over a pool while working out on cardio machines. Tuesday at 8 on NBC.

"Lost" Jack questions Locke's motives after he's asked to perform a tough task. Anthony Cooper: Kevin Tighe. Helen: Katey Sagal. Tuesday at 9 on ABC.

"American Idol" One of the final five singers is eliminated. Harry Connick Jr. and Lady Gaga perform. Wednesday at 9 on Fox.

"Cougar Town" Jules and Grayson ponder a "friends with benefits" relationship; Andy hires a nanny; Bobby hatches an unusual moneymaking scheme that yields dividends for Travis. Wednesday at 9:30 on ABC.

"30 Rock" Mother's Day equals mommy issues at "TGS": Jack's mother (Elaine Stritch) gets mixed up in his messy love life; Liz's mom (Anita Gillette) reconnects with a former flame; Jenna's oddball parent (Jan Hooks) arrives; and Tracy's "mom" (Novella Nelson) teaches him a valuable lesson. Appearing: Buzz Aldrin; Elizabeth Banks; Cheyenne Jackson; and Patti LuPone. Thursday at 9:30 on NBC.

"'Til Death" Ally's baby shower is nearing and Joy's becoming obsessed with it, but Mr. White can't come up with a gift idea. Meanwhile, Dr. Bialik invites old friends (Mayim Bialik's "Blossom" cast mates Jenna Von Oy and Michael Stoyanov) to Doug's therapy session. Sunday at 7 on Fox.