Birthday: May 27, 1973

Age: 39

No. 1 Song in 1973: 'Tie a Yellow Ribbon Round the Ole Oak Tree' by Tony Orlando and Dawn

Other Notable Stars Born in 1973: Neil Patrick Harris, Seth MacFarlane and Mario Lopez

'30 Rock' star Jack McBrayer is so young-looking that creator Tina Fey built a whole mythology around his character Kenneth Parcell being immortal -- a running gag that was confirmed in the series finale when we saw he was still alive well into the future as Liz Lemon's granddaughter drove around in her flying car.

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