Tomb Raider: Uncharted where you can play as either Nathan or Lara through the whole game, and a full Nate + Lara Co-op playthrough would be awesomeness. I vote Eidos design the platforming elements though.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix