Doctor Who-A book with a big sci-fi element or time-travel.
DoooWeeeDoooooo!! Sorry but I am currently watching season eight of DW. Anyways I will choose Ruby Red by Kerstin Gier. This books main aspect is time-travel. In fact that is what the trilogy is all about!
24-A book full of action.
This is pretty hard for me to answer, since my prefered genre is action. An Ember in the Ashes by Sabaa Tahir. I read it back in May and I really enjoyed the story line, the characters and the action.
Roswell-A book with aliens in it.
Ummm, this one is a bit harder, I don't read alien books that often. Gravity by Melissa West, I read this one about a year ago and I don't remember it that well.
The Walking Dead-A book with zombies in it.
I only read one book with zombies in it and that is Infinity by Sherrilyn Kenyon. I just realize that I lied I did read another one.
Supernatural-A book with many supernatural/paranormal creatures in it.
The Mortal Instruments by Cassandra Clare. There are demons, angels, werewolves, vampires and more.
Once Upon a Time-A book that is/or is based on a fairytale.
Goodness, I think Off the Page would count.
Ghost Whisperer-A book with ghosts in it.
Clockwork Princess has a ghost in it
Glee-a book a high-school setting.
Paper Towns by John Green, most of the book is spent in high school.
There is the tag! Hope you enjoy!