TiVo Guide Week of May 17, 2010 *spoiler alert*

"Gossip Girl" In the third-season finale, Blair must make a decision about her future with Chuck. Meanwhile, a post on Gossip Girl about Dan causes problems for Nate and Serena; Dorota has her baby; Georgina returns to town; and things go from bad to worse for Jenny. Monday at 9 on The CW.

"American Idol" The final three contestants each perform two songs---one a judges' choice and the other a choice of their own. Tuesday at 8 on Fox.

"Glee" Will's high-school rival (Neil Patrick Harris) shows up and causes trouble for the glee club. Meanwhile, Rachel struggles with a longstanding personal problem; and Artie's dream leads to an adventure. Tuesday at 9 on Fox.

"Community" In the Season 1 finale, Britta and Professor Slater vie for Jeff's affections. Meanwhile, Abed doesn't ask Troy to move in with him, leaving Troy feeling confused about their friendship. Thursday at 8 on NBC.

"Party Down" When he overhears aspiring screenwriter Roman talking about his script, birthday boy Steve Guttenberg (as himself) offers to turn his party into a writers seminar. Friday at 10 on Starz.

"Lost" The series finale. Sunday at 9 on ABC.

"Family Guy" Season 9 finale: The "Star Wars" saga, "Family Guy"-style, continues with Peter's spin on "The Empire Strikes Back." Sunday at 9 on Fox.