Google Doodles: the final frontier. These are the voyages of the Googleship Enterprise. To boldly click where no man has clicked before.
One of the more involved Google Doodles to date, the Star Trek doodle actually lets you go an a whole mission, one with some iconic moments. Go give it a try, seek out new life, new civilizations, and easter eggs. [Google]
Spoilers ahead, but here's the best easter egg in case you didn't find it.