Animator vs. Animation by *alanbecker on deviantART
Adobe Flash Tutorials - Best of | Tutorials | Smashing Magazine
Extensive list of Flash tutorials with descriptions from different sources.
Ajax Animator Open Source Flash
Web-based open source application for creating animations. Allows for the creation of multiple layers and uses a timeline. Not much documentation or support since it's early in development, but looks like it's worth playing with if you don't have the budget for Flash and do have some time.