This video accompanies a review article, "Theory of Algorithmic Self-Assembly", by David Doty, in the December 2012 issue of Communications of the ACM. It explains the experimental background and theoretical model that underlies the ideas and results discussed in the paper. Watching it before reading the article would likely make the article easier to understand.
A preprint of the article is available here: dna.caltech.edu/~ddoty/papers/tasa.pdf
The official version of the paper is here: cacm.acm.org/magazines/2012/12/157881-theory-of-algorithmic-self-assembly/