Script Summary: 2010-12 version. beta. Provides non-redirecting links, with visible URLs, alongside Google search result links.
Google have made further changes which have temporarily stopped the script working when you're logged in to a Google account
Take note that this script works by deleting most of Google's global objects - this means that features that I don't use, but you may, don't work. You might want to adjust the @include and @exclude settings so that Maps still works the way you want it to, for example.
Incidentally Google, if you're reading this, my primary purpose is not to block your ads, it's to stop you tracking where I'm going. I don't mind the text ads provided they are clearly distinguished from search results, and aren't misleading (like 'Buy the holy grail on ebay'). Why don't you provide a google.notrack property that I can set to stop your massed event handlers from running. Then we can live together in peace.