LOST currently has Sawyer, Jack, Kate, Juliet, Hurley, Sayid, Shannon, Jacob, Ben Linus, Ethan Rom, Man In Black (for real), Ana Lucia, Charlie, Claire, Miles, Desmond, and Alex Rousseau. For real. We'd love a Boone, Faraday, Charlotte ... pretty much anyone that isn't already listed would be awesome to have!
Veronica Mars currently has a Veronica, Logan, Piz, Mac, Cassidy, Keith Mars, and Lilly Kane. We'd love a Wallace, Weevil, and Dick.
Glee currently has a Puck, Finn, Quinn, and Rachel. Pretty much any of the other characters would be welcome.
True Blood currently has a Godric, Pam, and Sookie. We would love love love an Eric, and anyone else from the show.
PM me if you have any questions!