Okay, I know we have the "Ultimate Gameplay Footage Catalog" already. But since that was posted a year ago, before there was beta, and most videos are from game conventions filmed with camcorders and very short, I decided to make a list that is perhaps more 2012.
It's a list of FULL playthroughs of the beta, in HD (almost all 1080p). The goal is not to list 20 wizard playthroughs, but to list every combination once. Meaning each class, each gender and different starting levels (lvl 1 and 13). And also to list different co-op teams, for example Barb and Wiz together or 2 Monks finishing the beta.
That being said, enjoy if you haven't seen some of these yet. If you have any additions, let me know and I will add it.