Best software demo you’ve run (or seen) and where did you find the event?

I’ve hit a few demo nights in SF with some gems and some straight-up misses. I’m chasing the high-signal ones where you leave with something you can ship next week.

What’s the best demo you ran or attended recently, and what made it great? If there’s a series or event worth following, drop it (city or online both welcome).

Always curious how folks are showcasing their hard work and what’s actually working.