Ah, I remember a number of these performances. Just to add a few that come to mind:
Someone mentioned Westbrook but the best PPR performance he had was vs. Green Bay a few years back and he only posted about 48 points. He had 3 TDs, 11 catches for 156 yards, and 37 yards rushing. I think that same week Jujo went for something like 200 yards and 3 TDs vs. Seattle. I remember getting an absurd amount of points that week just from my RBs (C-mart, westy, and jujo).
Shaun Alexander had a Sunday or Monday night performance in which I believe he posted 5 TDs in the first half.
In regards to Priest, the best performance I remember was when he went over 100 yards rushing and receiving against Seattle. I think it's very close to CJ's numbers (about 56 points in standard PPR).
As far as wideouts go, Steve Smith and Chad Johnson have both had some monster games but the best one I remember is the Jimmy Smith one. I want to say there's another I'm forgetting though. I know chambers had a 3 TD game though I don't think he had all that many receiving yards.
If you're in a league in which passing TDs are 6 pts, then I think a couple QBs may have eclipsed 56 points. Peyton, Brady, and Brees have all had 6 TD games though I don't know how many yards they totaled.
All of my analysis is based on PPR