Good Flash applications?

After reading http://news.ycombinator.com/item?id=81594, I kind of realized that I'm missing this whole Flex/Actionscript/Flash world (do those even go together?)

My only exposures to Flash are with Youtube which sucks and Google Video which is awesome. Are there any real interactive apps that aren't just glorified databases or passive?

I've been thinking that the browser sucks for interactivity (no, Javascript abuse isn't acceptable), thick client applications are too much work but something in between could be golden.

Thanks

Update: I guess games could count but aren't what I am looking for. Anything else?