I'd like to meet:
A visitor from the future
Music:
Loreena McKennitt, Hooverphonic, Ken Davis, Mono, Enya, Rammstein, Weird Al, and others
Movies:
Ghost in the Shell, The Return of the King (animated), Peter Jackson's Lord of the Rings, Grave of the Fireflies, The Princess Bride, Indiana Jones, Bruce Lee
Television:
The Simpsons, CSI
Books:
The Lord of the Rings, The Hobbit, Sherlock Holmes, Michael Crichton's books, A History of Mathematics
Heroes:
David Hilbert, Batman