Your Day in Pop Culture (Monday, Aug. 4, 2014)

This Day in Pop Culture History
1958: The Billboard Hot 100 debuts, ranking the most popular singles in American music.

Famous People Have Birthdays Too
1955: Billy Bob Thornton, actor (Sling Blade, Primary Colors, Monster's Ball, Bad Santa, Fargo)
1961: Barack Obama, Funny Or Die actor
1981: Abigail Spencer, actress (Rectify)
1983: Greta Gerwig, actress (Frances Ha, Arthur)
1985: Crystal Bowersox, American Idol contestant

Who's on What Tonight: Your Guide to Late-Night TV
CONAN: The cast of Orange Is the New Black, Nikki Lake
FALLON: The Hundred-Foot Journey's Helen Mirren, Avatar director James Cameron, music group Spoon
LETTERMAN: REPEAT
KIMMEL: Sex tape star Kim Kardashian, Let's Be Cops' Damon Wayans Jr. and Jake Johnson, music group Disclosure
MEYERS: Joan Rivers, Seth Meyers' brother Josh Meyers, music group Rixton
FERGUSON: The Rover's Guy Pearce, comedian Andi Osho