Introducing the mvabund package (and why multivariate statistics in ecology is a bit like Rick Astley...)

http://www.methodsinecologyandevolution.org/view/0/podcasts.html#vid-warton

You can read the paper at:
http://onlinelibrary.wiley.com/doi/10.1111/j.2041-210X.2012.00190.x/full