Let's just get this out of the way here and now: you should be watching "Forward Unto Dawn" if you're even remotely a fan of Halo.
This video series is well produced. It's being made in live-action between the folks at 343 Industries and Machinima. The storyline has been solid so far. Heck, even the acting has been decent. And each episode has checked in at least over 16 minutes in length.
Finally, below lies the third and most recent episode episode. Watch it!