First, merry christmas, and (soon) happy new year too all of you !
Seems like Adobe recently made some pages about game development in Flash as part of the Developer resources. Named Flash Platform Game Technology Center, they list some "featured" games that were made in Flash and are showing good use of the technology.
I was surprised that the first featured game was ScaryGirl : not because this is a bad game - Scarygirl is a very nice game, congratulations to the TouchMyPixel team for it - but because it's entirely written in Haxe as stated on the developers page :-)
Anyway, have a look a the game, it's a very good one, and it shows that serious people are using Haxe for "real stuff" (so do I, and many other developers as well).
Oh and just a small note : we have recently been moving Haxe from its old CVS repository to a brand new google code SVN. You can browse the source code and report issues / features requests there.
EDIT maybe I was a bit too fast, someone noticed me that the developers comment were talking about the Scarygirl website that is written in 100% Haxe. Only parts of the game itself are in Haxe as a previous mail of Tony was talking about ;)