This blend was used in the following animation:
http://www.youtube.com/watch?v=PMwNFTQnP7Q
This is the tutorial for animation technique:
http://www.youtube.com/watch?v=QO7zd_tG4Hs
Blenjoy..
The animation was done by using very simple techniques like scaling and shape keys. The walls were done by build modifier. I'll be making a video on how I made it. Blenjoy..
Smooth Animation... Very Good.