It's a pretty simple game. Name two things that are fairly similar (Mac or PC; Coke or Pepsi; etc) the next person chooses one of the two and that person states a this or that.
Coke or Pepsi
Mac or PC
Chocolate or Vanilla
Nickelodeon or Cartoon Network?
Billy Mays (I love the name)
vanilla or chocolate?
hiccup. he was the first dragon-trainer!
captain kirk or christopher columbus?
uh, dinosaur! i love everything that reminds me of history!
genghis khan or the easter bunny?
sarah palin or lady gaga?