Where could I find presentations, etc. to use as marketing material for MS products?

[Booty]

Pretty funny topic for a guy with Tux as his Avatar, I know, but... instead of taking the time to go through and make a powerpoint presentation (or something like that) to show some of the features and uses of different products (say, Exchange for example), is there somewhere I could grab some? I would think that MS would have some of this type of material available, but I haven't seem to come across exactly what I was looking for while wading through their site (yet).