I installed Oracle on one of our servers, and couldn't get it to work. The guy I work with and I decided it's because we're running 64-bit Windows. So I download the 64-bit installation, try to run the installer, and I'm told that it won't run on my machine.
This is why my two personal computers run Mac OS X Tiger and Fedora 7 Linux, the latter of which is open source and therefore free. Both of them are Unix based. Screw you, Bill.