did you guys see what you can do in halo2?

i was looking at the 8 minuet video on ign (insiders only) from e3

and it showed a guy playing and he was in the back gun of a warthog and an alien jumped out of a ship landed on the warthog killed and pulled out the driver

the it showed the guy playing jump on a ghost and beat the crap out of the alien and kicked him out

i cant wqait to get this game!!!!