I still do most of my quick editing in iMovie '06, but the templates for trailers in iMovie '11 are just too fun and easy to not use with students. In particular, the movie trailer templates are ideal for book trailers. One fun final project to do is to have book club groups design, film, and edit their own trailers for the books they've read.
The key to doing this is to print out the storyboard that comes with the movie trailer template. They're possible to save as pdf files. That way the children know exactly how many scenes to plan, and what to say in between scenes. We're still working on the book trailers for this year, but here are some samples from last year's grade 4 students.
Sammy Keyes and the Hotel Thief by Wendelin Van Draanen
The Westing Game by Ellen Raskin
Clues In The Woods by Peggy Parrish
Chasing Vermeer by Blue Balliett