Babylon 5, Heroes, Lost, Firefly, The West Wing, The Amazing Race, Survivor, Homicide: Life on the Street, Star Trek (all incarnations), The X-Files (before David Duchovny left), NCIS, Doctor Who, Blake's 7, Red Dwarf, Black Adder.
If I had DSTV, then there might be a TV channel worthy of being called my favourite.
The original Star Wars trilogy, the even-numbered Star Trek movies, Serenity, Gattaca, the Truman Show, Children of Men.
Anybody who doesn't constantly make the headlines.
While I do listen to a variety of stuff, most of the time it's either prog or metal. Favourite bands include Dream Theater, Marillion, Fish, Iron Maiden, Threshold, Savatage, Shadow Gallery, Rush, Skyclad, King's X, Spock's Beard, and Pure Reason Revolution (a special prize to anyone who's heard of half of those bands).
Science fiction and fantasy in general, in particular anything by Terry Pratchett. Other favourites include Raymond E. Feist, Isaac Asimov, Neil Gaiman, Tad Williams, and David Brin.
http://www.tvsa.co.za/default.asp?blogname=callingheroes
Watching TV, reading, listening to music, general nerd stuff.
Rugby and cricket, but only watching them. The closest I get to playing any sport is semi-regular games of badminton.