Computer Science-Networking, AI, Human/Computer Interaction, Graphics. Tech gadgetry of all kinds, (ooo! Shiny objects that do cool stuff!) Cognitive Psychology, Developmental Psychology. Gardening, Life Science, Thrifting, Walking, Comedy- Standup, Sketch, Satire, and Parody. Fashion History (14th Century to 1940), Ancient Civilizations, Archaeology.
Joyful People
Lots! And then some! Queens of The Stone Age,Dimmu Borgir, The White Stripes, Wolfmother, Tool, System of A Down, Yngwie Malmsteen, Thrash, NWOBHM The Detholz, 80's New Wave, The Beatles, 70's love songs, and many, many more....
House of Flying Daggers, What the Bleep Do We Know, Gangs of New York, The Aviator. I'm not a huge movie fan, but I do like some movies.
BBC America, MSNBC, The Discovery Channel, and PBS.
and Newspapers. Wikipedia.com and occasionally a magazine. All are wonderful!