I've posed a problem for myself in naming our impending gathering "Wordapalooza!" because of the "!". When ending a sentence with "Wordapalooza!," I'm inclined to still add punctuation, since the exclamation mark isn't really the punctuation for the sentence. But, does "Wordapazlooza!." look weird? Or is it weirder to you without a final punctuation mark?

Can you think of an instance in which there'd be three marks in succession, other than the informal "!?!?!?"?
How about that one - do quote marks count?