Oh yes, the mini-me's.
The casting folks are just amazing on Glee, aren't they?
And if you haven't heard, the word is out that the producers are going to promote Darren Criss from recurring to a regular. Those of you who, like me, watched Cold Case saw Darren in the Woodstock '69 themed episode last spring. I wish I had the two links handy right now, but he's done interviews with Vanity Fair and Billboard in the past two weeks. He's definitely deserving of being cast on this show.
(And if you haven't heard, in addition to the Christmas album, there's a discography-type release of the season one music, and volume four of Glee:The Music coming out at the end of November. And yes, "Teenage Dream" is on it.)