Help your potential matches find common interests.
I don't have favorites, but these are good:
Books: Gaia's Garden, Oryx and Crake, Nonviolent
Communication, The Unsettling of America: Culture &
Agriculture, Vagabonding, A Thousand Splendid Suns, Eating Animals,
The Wild Trees, The Jungle, The Handmaid's Tale, Wild Fermentation,
The Color Purple, The World Without Us, Into the Wild, To Kill a
Mockingbird, Cradle to Cradle, General from the Jungle, Invisible
Man, The Guide to Getting It On, Native Son, LOTR, Dune, My Name Is
Asher Lev, Ender's Game, Evasion, 1984
Music: Against Me!, Aimee Mann, Belle &
Sebastian, Bikini Kill, Bjork, Bright Eyes, Cat Power, Damien Rice,
Dystopia, Elliot Smith, The Faint, Fall of Efrafa, Haley Bonar, Ida
Maria, Inara George, Ingrid Michaelson, Kraftwerk, Ladytron, Le
Tigre, Low, Madeline Adams, Manu Chao, Mason Jennings, Mirah,
Modest Mouse, PJ Harvey, Portishead, Radiohead, Regina Spektor,
Sleater-Kinney, Teagan & Sara, This Bike is a Pipe Bomb, Tool,
Woody Guthrie, Yeah Yeah Yeahs, Zaz, etc.
Podcasts: This American Life, Science Friday,
Radio Lab, sometimes Here on Earth, and The Story
Games: Settlers of Catan, Dominion, Bezique,
Munchkin, 7 Wonders, etc.
Food: Vegan (as long as it is not chocolate.)