I have read an article about various shuffle algorithms over at Coding Horror. I have seen that somewhere people have done this to shuffle a list:
var r = ne
Seems like a good shuffling algorithm, if you're not too worried on the performance. The only problem I'd point out is that its behavior is not controllable, so you may have a hard time testing it.
One possible option is having a seed to be passed as a parameter to the random number generator (or the random generator as a parameter), so you can have more control and test it more easily.