What is Islam? (extra credit)

One of the student from my 10:00 session will be giving a presentation on Islam this week (Tuesday, April 19, 8:03 p.m. in the Centennial room.  I will give you a few extra credit points for going to the presentation and adding your comments here. 

What did you learn from the presentation?  Note in particular anything you learned that might help as you prepare a potential essay response to the generalization that Muhammad created "one of the world's most attractive and compelling religions"?