I wonder what Nintendo will crossover next. Maybe the angry birds will meet the Yoshis and probably form a alliance with them against the pigs... but i'm just theorizing, of course.
@Heigw I see... You know, Wario and Waluigi are always forging some hare-brained scheme to make a few bucks... well, coins actually, but still... do you think Waluigi will plan to capture those birds to start a farm?