Nerd voice: "excuse me but given that he can fly, wouldn't Superman be able to recover from a simple stumble and make it look inconspicuous? He *meant* to do it."
These movies work better than the others because Clark Kent looks like a nerd even when he's Superman, and Lois Lane isn't really all that attractive. So I guess you care more about theie relationship. It's not like Lois could get any guy she wanted usually.