Murphy still isn't sure, but considering the conceit of the episode -- that four of the McKinley High School students will be put under anesthesia by John Stamos's dentist character and have Britney-related hallucinations -- she could literally appear as anyone. (Seacrest's co-host suggested the pop star could appear as a dental hygienist, which sounds more than plausible.)
The Glee co-executive producer also denied a rumor that a Michael Jackson tribute episode was forthcoming because of rights issues, but then then allowed that Jackson was still on his dream list for the post-Super Bowl episode with Prince and The Beatles. Oh Ryan, you know it's going to be The Beatles -- you don't see Prince sending you mix tapes, do you?