User blog comment:DamiedeterJR/Gravity Falls Question/@comment-32402536-20130620155627/@comment-5320851-20130805200805

It depends, if the cross over was a really inpredictible episode, like a parody, or only a small cameo where they more or less get shot out, then it wouldn't be too bad. But a full on cross over with anything that Disney has the rights to would be terible.