Thanks for this - a decent reminder. I recently got into this due to the same frustrations, and now my bigger problem is how to efficiently animate low fidelity elements.
I've experimented with CSS, After Effects, and so on, but haven't found a really rapid solution yet. I am considering Keynote though.
For low-fi stuff, I've recorded elements in Axure at times. It's a great way to shout out ideas to the team and get quick feedback.
Here's a quick post on using animated GIFs to present and share your work.