I watched this movie when I started to take interest in Super Junior so I didn't really know who was who back then. I knew they had many members and I knew the names but not the faces. So I've found the movie incredibly helpful. But this is not relevant at all.
The Attack... is crazy. Funny. Absolutely entertaining. The point of the story is NOT that: Here's is Super Junior bow down unworthy trash and drool stupid fangirl.
Attack... has an actual plot and the boys are acting very well. Okay... they are practically making fun of themselves but they are still very good. Especially Ryeowook and Kangin.
Considering this is an idol movie and that it seen mostly by the fans and ohmygodeastasianhumor! it is very good. I've seen it at least 5 times already and I still find it funny.
It's worth a watch. And more. They are after all all "Wonderboys".