Ok, I've put the script on a server which doesn't mind downloading the file to display. And for the hell of it, I got a domain as well

Check out:
http://showsrc.com/ 
I've also made it dead easy now to link to ones sources. Lets say you want to provide someone the HTML version of the souce code which resides here:
http://jtank.net/src/src/net/jtank/io/Ini.java .
Simply prepend "
http://showsrc.com/$" to it (so that you get
http://showsrc.com/$http://jtank.net/src/src/net/jtank/io/Ini.java) and bob's your uncle

Could it be any easier? Of course this isn't a replacement for those who are showing a lot of source and will install a local version of the script, but for people with only a few sources to display it saves the hassle of uploading and configuring the script.
Cheers,
Will.