I found a program online that I'm very excited about: a podcast called LATINUM, hosted by Evan Millner, a South African fellow who is based in London.
LATINUM is based on the premise that to truly learn a language, one must 'install' it in one's brain by hearing and speaking it often (and not just read and write it and study paradigms and cases, as in traditional language-learning programs).
These podcasts can be downloaded from the website or through iTunes (search keyword Latinum).
One warning, though: the shows are not listed in the order in which you should listen to them. Start by scrolling down the main page and listening to the program introduction (here's the permalink page for it).