Hopkins vs Ruiz would be a horrific fight to watch but I think Hopkins would outsmart him..
As for Hopkins vs Haye, I'm sure plenty on here think Haye would blast him out or win easily, but I actually pick 45/46 year old Hopkins to beat Haye. When has Hopkins ever been hurt or KOd? He has the power to KO Haye though in my opinion and will be the best boxer Haye has ever faced in his entire life. It's not hard to imagine him walking Haye onto one of those sneaky right hands, the kind that dropped Calzaghe. Lets not forget his experience and the fact that he is like a chamelion in the ring and can change and adapt in any way. Not to mention his liking for, shall we say, "old pro" moves. (in other words, dirty tactics).
And yet I'm sure most on the forum think Haye would blast Hopkins out.
One thing is sure.. a fight in America, on HBOPPV, that will put millions in Hayes pocket and put a KO beside Bernards name on Hayes resume, will look enticing to Haye and I can certainly see this fight happening.