Man I want to do one of these. Almost got one through a little while back only for it to fall at the final hurdle.
I've even started to learn After Effects in my (non-existent) spare time. But until then, these will keep me inspired.
First up, from Lock, Stock...
Nick the Greek from Ben White on Vimeo.
Next a German language promo for Getting Things Done (GTD)...
Dinge geregelt kriegen (Getting Things Done) - Booktrailer from Marko Thorhauer on Vimeo.
One illustrating a section from Catch Me If You Can...
Catch Me If You Can [Kinetic Typography] from Yuki Yamada on Vimeo.
And last, but not least, a typographic illustration of Snakes and Ladders...
Snakes and Ladders - Project 100 from Gemma Harris on Vimeo.
If you like these, you can find many more at Nice Type and the Kinetic Typography Channel.