DEFINATELY read The Hobbit! It's a great introduction to Middle-Earth... it explains so much about the One Ring, Gandalf, Smeagol and hobbits...
I really want to see TRotK again.
The Eagles helped out more often than TML says: They fight in the battle of 5 armies (Elves, Dwarves, Men, Orcs, Wargs). They carry Gandalf to Lórien after his ressurection. They help out in front of the Black Gate.
Gandalf's body died and his spirit went back to the Gods in the west. They sent him back, more powerful as the White Wizard. (The movie doesn't tell that Saruman abandoned his White position by choosing 'of many colours'...)
Tacoes are waiting.
Oh yeah, gotta see all the trailers and teasers...