I'd check out the IGN DVD Digigods podcast. They cover a wide variety of Blu-ray and DVD releases every week. The two hosts are members of the Los Angeles Film Critics Association. While I don't always agree with their takes on film, it's a great way to know what to look for and what's coming out as they cover numerous genres including foreign films, docs, etc.
http://dvd.ign.com/index/digigods.html