That handsome devil Chace Crawford will appear on 'Glee' this season, in the much-heralded Episode 100. Want an early taste of the former 'Gossip Girl' star on set with 'Glee' vets Dianna Agron aka Quinn and Mark Salling aka Puck? See the tweet below!

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Crawford will be coming aboard as a love interest for Agron's Quinn, who is returning after an absence. He will play Biff.

Ep 100 is a landmark for the series, which will sign off and close shop after Season 6 next year. The episode will also mark the return of Gwyneth Paltrow and Kristin Chenoweth, as well as onetime regulars Heather Morris, Harry Shum, Jr. and Amber Riley.

So, yeah, it will be a star-studded, all-star episode when the show hits its century mark. The 100th episode will be a two-parter, airing on March 18 and on March 25.