BTW, when is Google going to allow third party developers to enhance its core search results via a search API? Such an API would allow third party developers to add Wolfram Alpha like features among other things right into the core Google search.
I think they used to do this - I could swear that I used to have a third-party plugin that I "installed" on my Google account that would show me JavaDocs whenever I Googled a Java class name. It hasn't shown up in about 3 years, though, and I haven't found any trace of it in the code I work with (which should be right around that area of the page...), so maybe it was discontinued.
At the bottom is 'Subscribed Links'. I recall having the same java search thing enabled, but it looks like there's only a lame javacio.us thing now that doesn't work the same way. They still have a manpages search option which is nifty, though it doesn't show up at the top anymore, unfortunately.