Take a look at this guy's YouTube channel. Roughly 50 videos debunking just about every claim made by 9/11 conspiracy nutters.
Thank you, Pwn. This is exactly what I was looking for. It will appeal to my HS students, as it involves no reading at all.
NB to all future commenters: the OP now has what he was looking for. Please be so kind as to disinclude me from all future scorn in-thread.