fxguide posted a great article about Mutant Land - there's an interview with Phil and an awesome look in to the process of the short, and how it came to be.
a little while back, i posted a link to a podcast with eric leven (cg supervisor) and hans brekke (lead animator) - this is a video clip from a portion of that interview, going over a bit of the process for the lumberyard sequence in breaking dawnpt1
..no longer exclusively shown through AICN, Mutant Land is now streaming on the open web. if you haven't already checked it out, this is a short that we did at Tippett Studio a couple years back: