Here's a fine collection of photos from Skepticon, including several of us in a lovely leather top hat. I think I need to get one for myself.
I'd like to see hats come back into style anyway. It seems like only Texans and their Stetsons that have kept up the practice.
More like this
There are many versions of Linux, but the two biggies seem to be Debian (on which Ubuntu and many other distributions are based) and Red Hat. Red Hat uses a commercial support model, so it is an example of a very different approach than Ubuntu.
I had promised a little more info on Scientific Linux. This is a form of Linux with a name that changes faster than my shirt when I realize I've got it on inside out. Form the Fermi LInux site:
This weeks Pseudoscie