Stalin Vs Martians
The trailer for Stalin Vs Martians promised so much. Stalin gyrated to trashy Eurodance while broken English barreled across the screen, and aliens straight out of Toy Story 2 fought hordes of tanks in a parody of real-time strategy. Then it came out and turned out to be a worse RTS than the games it was parodying. Red Alert 2 gave us better comedy sci-fi Russians and a better strategy game as well, but at least we'll always have that trailer.