Found this a pretty interesting (although perhaps not the best acted) set of lessons in conversational Japanese. At times it might come across a little condescending, but still you can pick up a good few situational nuances from it. There is very little English, so watch out.
http://www.youtube.com/watch?v=RrJ1CamV3UQ (1st episode)
It appears you can read the dialogues (as well a few additional texts) here:
http://bbs.dawhy.com/viewthread.php?tid=50153
The site is Chinese, but the majority of the content is Japanese.
There are 25 episodes in all. Personally, I find the hardest things to understand to be the accents and mistakes of the students, particularly the Brazilian guy. Regardless, you've still got to respect the guy-- he's using his non-native language in front of millions. Even if you don't get much at first, many of the same things are said each episode, so you will eventually pick them up.
頑張ってください
