Alien invasion

Alien invasions suck. Don't get me wrong, as resourceful and responsible Earthlings, we'll whoop the crap out of nearly every bug-eyed varmint in a flying saucer that comes down to our planet looking to start some shit, but its a damn pain in the ass to be sure. Body snatchers are the worst though. Every now and again some alien spore or glob of space snot will latch onto some human DNA and the next thing ya know, they've taken complete control over your mind and body. Or they just replace you entirely and continue the cycle of replication until all of the cool groovy people on Earth have been supplanted by a bunch of brain-numb drones. Booor-ing!

Your larger scale invasions however, though dangerous, at least afford humanity a fighting chance. Sometimes ya gotta deal with some big honkin' tripod ships that come down to Earth blasting the crap out of everything and everyone in sight, but don't be too intimidated by them. A good healthy sneeze from some diseased vagrant is usually enough to send them packin'. And if that don't work, you can always recruit Tom Cruise to help you out. The worst ones are the jerks that come down in their gigantic mother ships and begin blasting away at all our famous travelogue landmarks. Even the combined might of all of Earth's armed forces can have trouble when it comes to a threat of this magnitude. When conventional combat methods fail, remember: you can always employ the aid of a wisecracking Air Force pilot, a Jewish TV station manager, a drunk and a president who likes to give inspirational pep talks to the troops.

Then of course there's the Martians. Friggin' pain-in-the-ass Martians, Goddammit. These scrawny little big-headed toothy bastards will pretend to be your BFF, then zap you with their death rays while shouting "Ack-Aaak!" Again, conventional methods of combat may not apply in these situations. Lousy music, however, will.

Don't even get me started on giant robots that turn into cars.