This looks like a screencast with added annotations and pauses, but considering the filesize I suppose it's a screenshot and an arrow that seems realistic in both appearance and motion rather than the prior. The annotations are helpful, detailed, and there's plenty of knowledge to take in. Though it would've been nice with a comprehensive guide on tweening, this does what it's supposed to, shows a user how to morph objects properly. Nice work!
That was pretty cool! Now all I need to do is get artistic skills, get flash, and want to make animations!