A few minutes ago Adam pointed me in the direction of some pretty fantastic insanity: someone has created a new map for Left 4 Dead based on the Indiana Jones Ride at Disneyland.
Because they are even cooler than the kind of people who would simply make a map based on the Indiana ride, they also made a "free ride" version of the map so you can experience it the way Disney intended--without zombies.
The free ride is what the YouTube video is taken from, but you can download the actual map here.
Sorry, other Xbox users, this works on the PC only--but, as Adam noted, "If valve was smart they would license some of these and release them as DLC."
Amen to that.