My boys have always been readers. I'm trying to remember what all books they have enjoyed. Obviously the Potter series. That was huge for all of us, even my husband and he doesn't read. Japanese Anime is a big hit with them. It's not exactly reading, but it's close enough for me. The Cap'n Underpants series and the Wimpy Kids ones, and we have a whole stack of Goosebumps books - got them at the library book sale for a quarter a piece.
The Percy Jackson series, although it might be a little young for older kids. My oldest boy is reading the Pride, Prejuidice, and Zombies series. I've heard that is pretty entertaining. I've tried to get them to read the Magic of Xanth series by Piers Anthony, but they won't even nibble at it.
We also listen to a lot of books on tape in the car. I pick books I like, but usually, they will get absorbed in them too. So far, we've listened to Angels & Demons, Da Vinci Code, To Kill a Mockingbird, and Gone with the Wind and they've liked all of them.
I'm reading the House of Night series and enjoying it. Definitely a girl book, but it had a couple of sex scenes that seem very inappropriate to me. Maybe for Jr's or Sr's in High School. Otherwise, they are great books, so I just wish they'd left the sex out of the first book.
Adrian