In Thursday television, "American Idol" names a winner, "The Office" finishes, and "Scandal" serves a season cliffhanger. But the night's biggest show will be the season finale of "The Big Bang Theory."

And for good reason: It's TV most enjoyable sitcom these days. Leonard contemplates taking a job overseas in the "Big Bang" episode at 8 on CBS. This development upsets Penny and makes Sheldon jealous. And Raj has problems in his relationship with Lucy. The sitcom's sixth season finale is called "The Bon Voyage Reaction."

The series finale of "The Office" isn't a culture event to rival "Seinfeld," "Friends" or "Frasier." But NBC is giving "The Office" a big sendoff with a one-hour retrospective at 8. The series finale, at 9, runs 75 minutes. It has been done in the style of a "Survivor" reunion show. But this reunion needs Steve Carell, and we don't know if he'll be there.

"American Idol" names its winner in a show that starts at 8 and will run more than two hours. Based on Wednesday's performances, Candice Glover should handily defeat Kree Harrison. Candice was exceptional on "I Who Have Nothing," the evening's final song. The show may offer other mysteries. What will judge Randy Jackson say in his farewell? Will Keith Urban, Mariah Carey or Nicki Minaj share their plans? Do you care?

Over on ABC at 9, a doctor fights to survive on "Grey's Anatomy" as a storm rages on the season finale. On "Scandal," the president (Tony Goldwyn) is making grand promises of a romantic future with Olivia (Kerry Washington). But the trailers suggest she'll be plunged into a cliffhanger that keeps fans wondering about her fate over the summer.

Graduation Day on "The Vampire Diaries," at 8 on The CW, won't be a reason for celebration. Score-settling ghosts are overrunning the town. The season finale of "Beauty and the Beast" follows at 9 on The CW.

The networks announced their fall schedules this week, and the consensus is that this season wasn't very good for new series. But CBS did give us the very entertaining "Elementary," and that drama offers a two-hour season finale at 9. Sherlock (Jonny Lee Miller) is stunned to learn that former love Irene (Natalie Dormer of "Game of Thrones") is alive. Miller has been wonderful as the modern-day Sherlock, and so "Elementary" is a reason to celebrate.