Allison Mack's Chloe Sullivan and Michael Rosenbaum's Lex Luthor are the only two reasons I'm still watching Smallville, so Chlex fanfiction is my passion. I can handle reading Chlark fanfiction--especially the ones where he realizes how wondeful Chloe is, and that Lana Lang is lacking as a human being. I've truly started to enjoy Chlollie, and Chruce fics are also pretty enjoyable. I actually adore Chloe being paired with anyone who realizes that she is a smart, beautiful woman who deserves to be loved and adored.
I used to love Prison Break and the characters of Michael Scofield and Sara Tancredi, but that has fallen to the wayside when the show killed off Sara. I will always adore my S1 and S2 Prison Break DVDs, but I will no longer be watching S3. I do find it hard to read Michael/Sara fanfics because I know by S3 Sara is dead. Perhaps I will go back to the fandom and check out some of the AUs.
My brand new obsession is the show Life, and the actor Damian Lewis who stars in the show as Charlie Crews. I've become a Crews/Reese shipper--friendship and romantic. The show is fresh and exciting, and Damian Lewis is an absolute treat to watch :)
And lastly, I love Harry Potter's Katie Bell and Oliver Wood--they are not characters that get a lot of attention in the book or movies, but I still think they are interesting.