Help your potential matches find common interests.
Standard uber geek fare:
Books: The Dark Tower Series by Stephen King, I'm also really big
into the Sandman Chronicles by Neil Gaiman.
Garth Nix, man. I just finished Sabriel. Holy crap.
Movies: Big Fish is my favorite, but I loves me some Indiana
Shows: Firefly, Dexter, Star Trek TNG, Sherlock, and on along that
vein. I also was recently introduced to the masterpiece that is
Music: I'm a huge fan of the Blues. The older and delta-ier the
better. Folk, Country, Dixie Jazz, Gypsy Swing, Classic Rock,
Bluegrass, and Celtic Folk... Most of the time if it has a
virtuosity to it, I can get into it.
The apex of musical expectation sits with Leo Kottke's
hallucinogenic weirdness, though I've had a recent triumverate of
an obsession with Harry Nilsson, The Band, and Paul Simon.
Food: Milk steak, boiled over hard, and a side of raw jelly beans.