wow fail. half of the clips you used to show act 1 were from act 3, and the funnel only appeared in act 3. Did you even play the game!? seriously, that is just fail! and yeah, don't want to give spoilers except for the MASSIVE SPOINLERS, you know, like the screens that who the "AI controlling aperture" is. hate to tell you, but that is a massive spoiler giving away a major plot point. The potato is okay because seriously, who is gonna guess that, but you are showing a major character's long term development there Mr. Pitts! I will agree on the other points, that the loading screens were badly mismanaged, and that some puzzles were lackluster. heck some were just plain deceptive and moronic, while others were pure strokes of genius. it's not a perfect game, and no it's not portal 1, but that you can give DA2 a perfect score and give portal 2 a 4/5 is just wrong. the game is less than $60 (50 retail, 45 if bought on steam at the moment), and co-op adds a massive amount of play time and replay value. the game is amazing, and deserves that 5 star rating, because, let's face it, saying that there are only 5 degree's of good or bad game is a pretty faulty system to start with, and giving an amazing game like this 4 stars means anything from 70%-90% and giving portal 2 anything below 90% is an injustice to the game, and all of the work that the valve team put into it.