Two Arduino's One Board?

NewJesus:
Yea so specifically what parts would they be able to share? I know for sure they cannot share the 16MHz Crystal.

Yes they can. Sort of...you can tell one of them to output the clock on a pin and the other one can use that for clock input.

NewJesus:
Why do i not need to use the clock Crystal? I thought the ATmega chip needed that. Can you please Elaborate?

They have internal 8mHz clocks which you can use.