Tonight we say farewell to one of TV’s most iconic female characters ever, plus a few of our other fave shows are ending their runs for the season, too. Here’s what to watch on TV and why:

WATCH: The Intense Trailer for RHONJ Season 6

The Vampire Diaries. 8pm on The CW. Damon has a request of Bonnie and Elena takes matters into her own hands in the season 5 finale. And yes, TVD has been renewed for a season 6!

OK! Exclusive: Arrow‘s Executive Producer Discusses The Chemistry on the Show

The Big Bang Theory. 8pm on CBS. Penny and Leonard decide if htey want to get married, and Sheldon decides he might want to make a life-changing move in the season finale. Here’s a rewind of what’s happened up until this point:

American Idol. 9pm on Fox. The winners pool gets narrowed down to two, and Scotty McCreery performs on the almost season finale.

WATCH: Grey’s Anatomy‘s Sarah Drew Reveals That Ben McKenzie Is Her Second Cousin!

Grey’s Anatomy. 9pm on ABC. Cristina gets the most epic send-off error, but meanwhile a potential terrorist attack could be effecting the hospital. You know those Grey’s season finales. Always emotional, always leaving us wanting more…

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The Challenge. 10pm on MTV. Two veterans and one newbie get into a brawl. We feel bad for the newbie already.

PHOTOS: Catelynn and Tyler’s Cutest Moments Ever

What are you watching tonight on TV? Tweet us @OKMagazine.

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