Some of the anime and manga I like includes: Arcana, Okane ga nai, Saiyuki, Legal Drug, Rebirth, Samurai Champloo, The Wallflower, WISH, xxxHOLiC, Time Lag, Close the Last Door, Aegis, Fruits Basket, Black Cat, Dragon Knights, Trinity Blood, Hands Off!, Pet Shop of Horrors, Death Note (and the movies), Gravitation, DNAngel, Battle Royale (love the movies as well), Basara, Prince of Tennis, Bleach, Alice 19th, and many more.
As for pairings, I have a few favourites. I absolutely LOVE Kakei x Saiga and Rikuo x Kazahaya from Legal Drug. I'm not terribly big on pairings or writing/reading fan-fiction though. I love seeing manga-ka who produce interesting, original works. (I admit, I'm a tad jealous of their talent!)
Also, if you add me... I am a HUGE music fanatic. Seriously, I have everything from classical to jrock and jpop to techno to Gregorian chants on my computer. I often babble endlessly about it, ha ha.