I haven't seen IM 3 and don't regret watching the HitB review. That said, if you're a person who really hates spoilers, you might want to avoid it. They do talk about the end. It seems like people have become much more sensitive about spoilers in the last decade. Did we even have a word for spoilers 20 years ago?
Total Recall - 1990
Bob McClane: You're gonna like this Doug. You are a top operative. Back under deep cover on your very important mission, people are trying to kill you left and right, then you meet this beautiful exotic woman.
Douglas Quaid: Go on.
Bob McClane: I don't want to spoil it for you Doug, but rest assured that by the time to wake up you get the girl, kill the bad guys and save the entire planet. Now, you tell me, isn't that worth a measly 300 credits?