I like the Google search bar in Safari, but I when I think of a Google search, I want it to actually open a new window. I have been using Command-shift click to open links behind my window for later viewing, so I tried holding these keys down and hitting return from the Google search bar. Sure enough, it opened the Google search in a window behind my current one.
[robg adds: We've run a hint on the Safari keyboard shortcuts before, but nowhere do they mention that the shortcuts work from the Google search entry area!]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030218154330874