Re: dvd recommendations
Most of what Nishio sensei have done is available on youtube. I find it immensely inspiring to watch. It is probably far away from what you do today, but maybe it will give you a new perspective on how Aikido can be in one interpretation.
Check it out on youtube. If you enjoy it - go pick up his DVD's.
Nishio sensei was against making DVD's BTW. In his point of view aikido is never 'like this' but always developing. Somebody talked him into it however, and today we are a number of people who are quite happy about that.