Playing God was a 2012 BBC documentary in the Horizon series, hosted by Adam Rutherford. The documentary discusses synthetic biology, the potential of science "breaking down nature into spare parts" and then rebuilding it back up as we wish.
Summary
The documentary discusses several examples. The documentary starts out by talking about genetically modified goats called "spider goat", synthesized by incorporating genes of a spider for silk production into goats.
References
Playing God (2012 film) Wikipedia(Text) CC BY-SA