first this, where he drives a hydrogen powered car, which splits water into oxygen and hydrogen, and then combusts the hydrogen:
http://www.youtube.com/watch?v=YIgOn1kRw5s&NR
and this, which contains the design of stan meyers patent, after he got food poisoned and died:
http://www.youtube.com/watch?v=bqfiAXIs3Xc
some more info,
the science behind:
http://www.youtube.com/watch?v=-7aOderfbGU&NR
some more.
http://www.youtube.com/watch?v=D7BAODqqcpQ&NR
webpage with interesting videos, and some explanations:
http://www.waterfuelcell.org/