TiVo Guide Week of May 18, 2009 *spoiler alert*

“How I Met Your Mother” In the fourth-season finale, Ted works feverishly to promote his business, while Marshall tries to get him to the roof for a surprise 31st birthday party. Monday at 8:30 on CBS.

“NCIS” In the sixth-season finale, the team travels to Israel, where Ziva has an uneasy reunion with her father (Michael Nouri); Tony has a confrontation with Rivkin; and Gibbs makes an important decision that reverberates throughout NCIS. Tuesday at 8 on CBS.

“American Idol” The winning singer is revealed in the Season 8 finale, which features a reunion of the Top 13 finalists. From the Nokia Theatre L.A. Live. Wednesday at 8 on Fox.

“Southern Belles: Louisville” In the series premiere of a reality series that follows the careers and romances of five modern Southern women at turning points in their lives, the women are introduced and their backgrounds are highlighted. Thursday at 10 on SoapNet.

“Batman: The Brave and the Bold” Batman and Robin reteam, but there's tension between the pair. Meanwhile, Crazy Quilt seeks revenge on Robin. Friday at 8:30 on Cartoon.

“Primeval” A deadly creature that's able to camouflage itself is residing in a so-called haunted house. Saturday at 9 on BBC America.

“The Tudors” In the third-season finale, Henry tires of the unattractive and uninteresting Anne of Cleves (Joss Stone) and takes a mistress, the comely Katherine Howard (Tamzin Merchant), which rekindles his passion. Anne's cousin, a Bavarian prince, arrives at court and sweeps Princess Mary off her feet, but their happiness is short-lived when Henry sends him back to his own country; with his new powers, Brandon accuses Cromwell of being a traitor and has him imprisoned in the Tower of London. Sunday at 9 on Showtime.