This one's apparently made the rounds on the internet for some time now, but I can't resist posting it here: Frank Zappa's suit-and-tie-clad 1963 appearance on The Steve Allen Show. At the time ...

It was a rare, early Hollywood television appearance for future rock music renegade Frank Zappa. Lean and hungry and unknown, the 22-year-old composer appeared on “The Steve Allen Show” in 1963.