Blurt! is another game that would be easy to adapt for use in the classroom as a review activity. Referring to facts highlighted in their textbook, students could make their own Blurt! cards to use in whole-class or small-group review.
Update (December 27, 2011): I just read this post by Nancy, a winsome and creative 5th grade teacher, describing how she uses Blurt! with her students to practice their vocabulary.