11 Second Club providing animation tips and tricks, and I recently re-visited the Acting it Out article where he goes through acting out a performance and shooting video reference. There's also several video examples with actor Chris Murray.
I first read this article when it was published over a year ago, but it's nice to go back to it and read it again as a refresher. Read the article here.
Also, check out the other Helpful Hints articles Eric has published - awesome stuff!