We are all makers
The Ubuntu Unleashed blog has a simple guide for getting Safari to run in Ubuntu. You basically install the Windows version of Safari under WINE, copy over a few core Windows fonts to your WINE install and it just works. You can even install the flash plugin.
I’m not positive that I wouldn’t feel a little dirty running closed software on a Linux desktop, but considering Safari is still my preferred browser under OS X (much to the embarrassment of some of my coworkers), I can understand why this could be cool for a lot of folks.