Abbott and Costello were a legendary comedy duo who made their name on radio, film, and television. They were the most popular comedy team of the 1940s and early 1950s, and their work is still enjoyed by audiences today. Their most famous routine, "Who's on First?", is one of the most well-known comedy routines of all time. The duo's popularity waned in the early 1950s, but their legacy lives on.

Here are some additional details about Abbott and Costello:

They met in 1936 while performing in a burlesque show.

Their first radio show was on The Kate Smith Hour in 1938.

They starred in over 30 films together, including "Buck Privates" (1941), "Here Comes Mr. Jordan" (1941), "Rio Rita" (1942), "Who Done It?" (1942), "Lost in a Harem" (1944), "The Naughty Nineties" (1945), "Abbott and Costello Meet Frankenstein" (1948), "Abbott and Costello Meet the Mummy" (1955), and "Abbott and Costello Meet the Invisible Man" (1951).

They were inducted into the Hollywood Walk of Fame in 1978.

The duo was made up of Bud Abbott and Lou Costello. Abbott was the straight man, while Costello was the comedian. Their comedy was based on wordplay, physical humor, and slapstick. They were known for their catchphrases, such as "Who's on First?" and "Nuts!".