Is it appropriate to post our thoughts about the hard hat challenge here?"Nothing being left to chance" and "seeds" makes me think of deterministic "random" number generators. And I presume we're talking the mathematical definition of "perfect" here: a number which is the sum of all its divisors apart from 1.
I'll be there, hopefully staying at Hilton LAX.
I've written up a post on the things I'm looking forward to: http://blog.functionalfun.net/2008/08/i-be-speaking-at-pdc-2008.html