DSLR shooters have realized by now that the quality of the built-in audio on cameras like the 5D Mark II, 7D and T2i is not so great. So if you want to take your audio to a more professional level to match that beautiful footage you're shooting, this is the class for you:
http://www.callboxlive.com/products/barry-greens-sound-for-film-and-tv
Through detailed explanation, hands-on demonstration, and tongue-in-cheek cinematic illustrations, DVXuser's Barry Green and Matt Gettemeier guide you through fundamentals for getting great sound in your film or television project.