I did not invite a debate! Sorry, when I saw all those answers flooding in, that line popped in my head!Of course you guys are right. When I thought of the question, Operation--Annihilate! was in my mind. So I was focusing on the "big action oriented" punctuation marks. Exclamation marks and question marks came to mind. Because of the inclusion of the The Operation -- Annihilate! And my bonus question, I only had one spin off episode in mind that also has the exclamation mark. Apparently, it's the only other episode to do so.So we've deviated way off my list by including the other punctuation marks and I'll have to recapture what the score is now! I should have narrowed it down to which other episode has the exclamation mark. That's okay because this has surprised me with the number of other titles with question marks and apostrophe marks. If it's of any interest, the bonus answer has not come from a series mentioned yet. Given the plethora of answers, it feels like everyone wins!