the only complaint I have about Van der Sar is that he gets nutmegged a lot of the time

Maybe it's because he spreads his legs too wide or doesn't get low enough or something, but it's painful to watch
You're right W.Sneijder, all of the above keepers were sold because they made a couple of mistakes. I clearly remember the match when he accidentally scored an own goal from a corner and made another blunder the same match, he was sold within the next few weeks
I thought Raimond van der Gouw was a decent keeper too

He sometimes put in some absolutely amazing performances when Schmeichel was out for one reason or another. Then again, he made some big blunders too, but he was inspirational at times (one particular match that comes to mind is one against Arsenal a long time ago)