I need a way to present info on amnesia that is funny, and that will really interest my pears and my teacher. Any ideas?

Your "pears"?

I am not certain there is much humor in this condition, I would avoid making fun of the condition. It is devastating to those who have it, and their loved ones, especially the children.
Avoid a lot of humor, is my recommendation.

"interest my pears" ? you must mean peers.

Anyway, to get started try learning a bit about it here:
http://en.wikipedia.org/wiki/Amnesia
Then use you imagination to come up with a plan. Why does it have to be funny? If I were you I'd settle for making it intense.

I put Case studies, amnesia into Google search. There are quite a number of useful articles. I believe that you will find some information that will make an extremely effective class presentation.

The Movie 99 first dates has a lot of humor abuot amnisia in it. As a brain damaged person I can tell you the funniest people on campus are the disabled comunity, go hang with them for funny stories.