[BluesDuke]

Classic Flintstones cameo: the Beau Brummels, the mid-1960s rockers, performing their great single "Laugh Laugh."

Not to mention the Standells, a few years before they became pre-punk garage-style hitmakers ("Dirty Water," "Riot in Cell Block #9," "Try It"), on The Munsters...

[BluesDuke]

Strangest cameo, if you don't count the like of Richard Nixon and Eric Sevareid on Laugh-In: future Hall of Fame lefthander Sandy Koufax, in 1962, grooving one to Mr. Ed ("OK, Sandy--nice and easy, buddy," hollers then-Dodger coach Leo Durocher), who promptly laced one to the back fence and galloped out an inside-the-park home run.