Update: 15th Dec Thanks to Pawel for Part 3 which we have just added.
The Variable - 100th Episode - Behind-the-scenes clips off Lost: Season 5 on Blu-Ray .
Thanks to Pawel for the heads up.
Also here are 2 links to the extended version in 2 parts. Thanks to Heather for the videos.
Part 1
Part 2
Part 3