Another interesting podcast I've found, this time giving a lot of detail about HDTV. This comes from Major Nelson who is interviewing someone from Microsoft Studios. The interview composes the majority of the podcast. It is quite informative. This covers the differences between all of the formats (1080p, 1080i, 720p, etc.), what makes HDTV look good (and bad), etc. If you are trying to understand the world of HDTV, check this one out.
This comes in two different formats: