Video: The 10 Most Popular 'Glee' Performances

 

  next: "It's My Life"/"Confessions Part II"

9. Singing in the Rain/Umbrella

Downloads: 315,000

In this wet 'n' wild mashup from early season two, Gwyneth Paltrow's Holly Holliday and Matthew Morrison's Will Schuester go head-to-head with the waterworks -- and not of the crying variety, either. The magnetism was palpable, Holliday's girls donning black raincoats and strutting about to Rihanna's hit "Umbrella," while Schuester's guys kicked and skipped about the stage on the classic "Singing in the Rain." The result? An almost seamless transition between songs that showed off the undeniable chemistry that Morrison and Paltrow's characters possessed. Our question: With all that water, someone should be making sure Artie's wheelchair doesn't rust, right?

  next: "It's My Life"/"Confessions Part II"