Credit: Adam Rose/FOX ©2011 Fox Broadcasting Co.

Glee manages to pack an insane number of songs into each episode, which means there will always be a few standouts... along with the inevitable dud or two. We've narrowed the performances from Season 3, Episode 15: “Big Brother,” down to the very best and the coulda-done-without. Do you agree with our picks?

Best Performance of the Night: “Somebody That I Used to Know” by Blaine and Cooper

Credit: Glee on Fox on YouTube Photo: Watch! Full Performance of Darren Criss's Blaine and Matt Bomer's Cooper Singing Gotye's "Somebody I Used to Know" in Glee Season 3, Episode 15: "Big Brother" (VIDEO)

Blaine (Darren Criss) impressed us with “Fighter,” but it was his duet with his bro on this current Gotye hit that is truly powerful. Sure, you have to ignore the fact that this is a song about two ex-lovers (awkward!), but these guys make it work, and both of their vocals are top-notch. Now, if only Blaine could have showered during this performance as well, it would have been perfect.

Worst Performance of the Night: “Up Up Up” by Quinn and Artie

We’re not ones to complain about more Quinn (Dianna Agron) songs, but this one doesn’t quite live up to the first Quartie performance of the night (“I’m Still Standing”) which has great harmonies and cute wheelchair choreography. Instead, “Up Up Up” is fun but not particularly memorable, especially since it’s used mainly as background music. However, the whole scene made Artie (Kevin McHale) look like quite the badass, which we always appreciate

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