SBS recently aired two excellent BBC documentaries - from the Horizon program - that are well worth watching. I found both to be very well made. Even though I consider myself well read, I still learned a thing or two. These documentaries seem to provide not only a good summary of the subject matter but also cover the latest developments (that I'd not seen before).
Both documentaries are available for a short time through SBS On Demand:
There are so many views on the topic thats its confusing. I have been reading in the last few months about it and the view if 13.8 billion light years to who knows.