Really amazing CGI animation that shows DNA coiling, replicating, transcripting and translating. It was created by Drew Berry of the Walter and Eliza Hall Institute of Medical Research. I love it because you hear the hum of molecular activity. Last part, on haemoglobine anaemia, is dramatic.
Next one is on HIV lifecycle, it isn’t as good, but it’s very educative.
In the meanwhile (2009) they discovered another way HIV spreads from cell to cell.