.Towel Day is when we all remember the life and works of that hoopy frood Douglas Adams, and for one day make sure that we, like all good intergalactic hitchhikers, Know Where Our Towels Are.
And lo, those of use who were mad enough in IT Services and the University of Surrey, did observe Towel Day most seriously. (Not)
And even Mr Turing joined in:
And why yes, we did have an audience while we took these.
See
http://www.towelday.org/ for more info.