This game is associated with a lot of great memories for me, so it'd awesome to see it show up at the Humble Store or GOG (and it'd be something I instantly purchase). Alas, my original executable from early 2008 has long since been lost.
I wish I was more into the whole Steam thing but... eh... it's not to my liking. I do, however, somewhat routinely check the Humble Store wiki to see if Aquaria has been added, lol. I hope to see it there at some point, or at the very least in another Humble Bundle, as I missed the ones with this amazing title.