Dunno **** about projectors, but take a look at keynote from Apple. Never have I seen a program with cooler transitions and effects than keynote - blows powerpoint out of the water.

Catch is you have to have a mac, but the new macs run windows anyway. So in the worst case you can run windows on your Apple laptop...

http://www.apple.com/iwork/keynote/features/presentations.html
http://www.apple.com/macbook