9. Groucho—who passed away 50 years ago today—temporarily hosted 'The Tonight Show.'

POP CULTURE
The high school flick—which was released 10 years ago—seems like the ultimate bromance movie, but its themes are much more universal.
He prepared for his role by visiting the zoo.
Garry Shandling's groundbreaking series about the life of a late-night talk show host debuted 25 years ago.
The Oscar-nominated funnyman used to be a mailman.
Clyde Barrow and Bonnie Parker were two of the most popular celebrity criminals of the 1930s (and they had a lot of competition in that decade).
Twenty years ago, the world learned what "The Full Monty" really meant.
Before he was Evel, he was Bob Knievel, leading salesman for Combined Insurance Company of Chicago.
We did the math.
For nearly 10 years, TV viewers got to experience a journey aboard a cruise ship nearly every Saturday night as The Love Boat brought the misadventures and romantic escapades of the luxury liner life right into their living rooms.
In the 1950s, '60s, and '70s, the BBC was so intent on erasing its original programming that employees could wipe a show with just three words on a generic form: "no further interest."
Theater is meant to be a visceral experience. Sometimes it's a little too visceral.