His infectious laugh propped Carson up many times when a joke or gag was otherwise faltering.And then Farrah Fawcett who captured every guy's imagination in the late 70's with this poster:

I personally know several women who were teenagers during that era who STILL sport the famous Farrah hair!
And then a guy not much older than me, who completes the trio. I admit that I lost track of him as he got wierder and wierder. But after looking at some of his later material, it was obvious that he was still as talented as ever. (Tough finding worthwhile video that can be embedded.)
These were all folks I sort of grew up with or grew up with me in an odd sort of way. Tough to believe these folks are gone just like that.