7. Destiny's Child
Beyonce, Kelly and Michelle rocked high necklines and pants while singing "A New Way to Walk with Elmo". They might be dressed a little too conservatively, if you ask us...
8. Diana Ross
The singer cheered up Big Bird by singing "Believe in Yourself". The year was 1979 and Diana was lookin' good.
9. Ray Charles
Bert and Ernie are graced with musical great Ray Charles, who performed "I Got a Song". Bert rocks the guitar, Ernie the drums and, well, do we really need to mention Ray's instrument?
10. Johnny Cash
In a performance that might have been more meaningful to Moms and Dads than the kids, Legendary Johnny Cash sang "Five Feet High" with Biff. Oh how we miss Johnny!
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