Music, Art, Theater, Science, Film, Laughing (not necessarily in that order).
Intelligent, compassionate, engaging people. (and Jon Stewart)
The Beatles. Bach. Paul Simon. Sarah Harmer. Dan Gerics. Rick Gerics. Prokofiev. Rufus Wainwright. Wes Montgomery. Paul Desmond. many, many more.
How much time you got?
The West Wing. Six Feet Under. The Sopranos. Extras. The Daily Show.
Contact by Carl Sagan. Why People Believe Weird Things and Science Friction by Michael Shermer. (those come to mind at the moment)
Many categories - in no particular order: Michael Shermer, Lennon/McCartney, Robert Duval, Emma Thompson, the guy who genetically altered wheat and fed millions of people as a result, Charles Darwin, James Randi, US Servicemen, firefighters and police, Einstein, Carl Sagan, Leonard Bernstein, many, many more.