I do agree that the ending plane chase scene was bad, but one scene doesn't make it a bad movie. The rest of the scenes were great and I definitely think it's worth a buy. A movie like this is not going to have the "re-watchability" of a good comedy, but I certainly believe that I'll watch this more than a few times.
Like the two of you, I agree that the ending scene was a disaster. The cheesiness of it amazed me; however, like Mr. J. Brown says, "one scene cannot make it a bad movie." Argo was extremely well made, and is definitely worth buying.
It's a good movie. I suspect that Mr. crane also doesn't like Ben Affleck's films or the actor. The ending was cheesy and the chase was unnecessary but I chalk thst up to a film director who only has three movies under his belt.