I am sure you have all used a few scripts you have found around the web. So what do you think has the best interface?

I'm not sure what to think myself. I like just about anything - but I want to see what you guys think. Feel free to post links to script demos and screenshots of programs you like!

Which Script? What for?

Please be more specific.

Any script.
Just something that has an outstanding interface.

I liked the Plesk interface basically because it is clean and to the point. I don't like interfaces that seem to have text/buttons for the sake of filling in space. Over-the-top graphics seem to put me off too, because it's generally just a tool that you're using to get the job done - not look at and admire its beauty.

Best User Inteface > Copper Project
Best Admin Interface > Interspire FastFind