plasq, developers of the hit Comic Life, have released a package of 10 screensavers for your Mac. They are funky, they are fun, and best of all they are free.
Now, I know what you're thinking, 'who cares about screensavers?' This is a matter or personal taste, but I would venture that these are some of the best looking OS X screensavers out there (especially A shining).
The sqreensavers (see what they did there?) require OS X 10.4.