Randomizing the Tests

Ever since I watched a talk by Jeremy Leitgeb called "Sensible Testing" (http://youtu.be/10pFYwST7IA) I have a guilty conscience whenever I don't run tests randomly :). You probably already know this but I'll mention it just in case; if a test fails, it is possible to use the --seed <seed #> option with RSpec to replicate the order in which a failing test ran and the seed number is alway in the output for randomized RSpec specs.