Why, I hear you cry? Because I love the way the multimedia keys plugin integrates with Gnome so that I can simply define Play, Pause, Stop, Next Track and Previous Track within my Keyboard shortcuts, and then just use the Fn+<apt_key> as defined on my laptop's keyboard to skip away with all my music !!

Great. 

The first one was someone at work who had seen, from across our open plan office, my Beryl-enhanced desktop flipping round in 3D glory. He pulled me over and asked if he was in a different universe of if he'd just seen my screen moving without moving...

The other one was a Developer (Java developer on Windows) who'd asked for a copy of Linux to play around with. I'd made one for him and handed him the CD. He asked me if there was any license key...