JFK Reloaded

This is the sweetest first person shooter ever. You're Lee Harvey Oswald, and you have to race the grassy knoll shooter through eight worlds to reach Dealey Plaza. The end boss is JFK's limo, which transforms into a robot and shoots plasma missiles at you. Hit it three times and it's dead. You can also unlock John Wilkes Booth, Charles Guiteau, Leon Czolgosz, Sirhan Sirhan, Mark David Chapman, and John Hinckley as secret characters.

Ted Kennedy later woke up after ~~a hard night of drinking~~ a series of seizures to sue the awesome guy who made it.

Extreme Ragdoll Physics can be seen here.