hobbits are his hobby
Sir Ian McKellen will reprise his role as Gandalf in the live action adaptation of the Hobbit.
Gandalf's sword is called Glamdring, 'foe-hammer'.
His amazing fireworks.
Gandalf
Gandalf
he thinks that he is useful
Gandalf is particularly good with fire. He uses fireballs and smoke on several occasions in The Hobbit.
The role of Gandalf is the same (it is the same wizard). Also the actor playing Gandalf in "Lord of the Rings" and the "Hobbit" is supposed to be the same person - actor Sir Ian McKellen.
Gandalf lives as a wandering magician, roaming Middle Earth looking and listening.
That Gandalf was an old man who made particularly neat fireworks.
Gandalf
Michael Gambon played Dumbledore in Harry Potter. Ian McKellen played Gandalf in The Lord of the Rings and will do so again for The Hobbit.