WATCH THIS:

  • "The Vampire Diaries" (8 p.m., The CW): The Season 5 finale apparently puts some lives at risk. In other words, it's business as usual.

  • "The Big Bang Theory" (8 p.m., CBS): Prime time's most popular sitcom closes out its seventh season with Sheldon (Jim Parsons) taking stock of the life-altering changes going on within the gang and considering a monumental move. Does this mean he's going to shift from his regular seat on the couch?

  • "Grey Anatomy" (9 p.m., ABC): Have the tissues handy. In the Season 10 closer, we're forced to bid farewell to hard-driven surgeon Cristina Yang (Sandra Oh), one of TV's great characters. We'll be OK, but what about poor Meredith (Ellen Pompeo)?

    Kevin McKidd and Sandra Oh in ’Greys Anatomy.’
    Kevin McKidd and Sandra Oh in 'Greys Anatomy.' (ABC/Eric McCandless)

    Also on Thursday:

  • "Hell's Kitchen" (8 p.m., Fox)

  • "Instant Mom" (8 p.m., Nickelodeon)

  • "Hollywood game Night" (8 p.m., NBC)

  • "Reign," Season finale (9 p.m., The CW)

  • "American Idol" (9 p.m., Fox)

  • "Rosemary's Baby," Conclusion (9 p.m., NBC)

  • "Maron" (10 p.m., IFC)

  • "Elementary," Season finale (10:01 p.m., CBS)

    Contact Chuck Barney at Facebook.com/BayAreaNewsGroup.ChuckBarney, or Twitter.com/chuckbarney