Thursday night is one of the busiest nights of the week when it comes to TV watching. Of course, there’s CW favorite, The Vampire Diaries, and this season’s been an easy one to sink our teeth into. Mr. Viggle’s also been enjoying it, telling us to expect double the trouble in tonight’s episode at 8 p.m.

“Katherine may be gone but that doesn’t mean Elena doesn’t have another doppelganger roaming around out there,” he tells us adding that a road trip to Atlanta is on the books to track down the “elusive clone.” He also makes the best crossover suggestion we’ve heard in awhile: Let’s add the cloned ladies of Orphan Black to the TVD mix!

Want to play along? Download the FREE Viggle App now!

Grey’s Anatomy and American Idol are also both new tonight. Over on Grey’s starting at ABC at 9 p.m, we’re gearing up for a season finale we’ve been promised will “shake” us to the bones. One of our current working theory? The Pacific Northwest rattles and rolls.

A shift’s in store over on Idol, too. The elimination episode is just 30 minutes tonight, the new status quo for the rest of the season. Tune into Fox at 9 p.m. on Fox to see who makes the Season 13 Top 9.

Looking to mix things up in your own life? Download Viggle! The points equal prizes to make entertainment even more entertaining.

Elisabeth Kramer is an Assistant Editor at Wetpaint Entertainment and our resident Downton Abbey expert. Follow her on Twitter and Google+!