I swear I remember some years back reading somewhere a set of guidelines for creating high-level encounters for low-level players. Specifically, I recall it putting the example of the Bespin Duel, something about Vader only have +10 BAB and... I can't recall the Reflexes cap.
It was basically written so players could actually hit high-level characters, for whatever purposes have you. I can't seem to find the article/guide anywhere at all, and I would be extremely grateful if anyone either remembers what those alternative rules were or knows the text I'm talking about.
Sorry if I'm being too vague, but I really didn't know where to ask since the WOTC forums went down (in all likelihood it was somewhere there).