MK vs DC. Sounds like the perfect game, doesn't it. Mortal Kombat vs DC Universe is a great two-player game for the Xbox 360, but what's even better is the fatalities from the Mortal Kombat characters. Maybe even the heroic brutalities from the DC guys.
If you want to learn all of the MK fatalities & DC brutalities, then Jack from Achievement Hunter can help. This four-part video shows you all of those deadly moves.
See fatalities and heroic brutalities for: Scorpion, Kitana, Shang Tsung, Sonya Blade, Batman, Superman, Catwoman, Flash, The Joker, Jax, Liu Kang, Raiden, Kano, Baraka, Deathstroke, Lex Luthor, Captain Marvel, Green Lantern, and Wonder Woman. Even see how to get the "Finisher" achievement.