Yes, like everyone in here I love GOG.com a lot. But It's nice to see old adventure games on GOG as well. The only adventure game on GOG.com is "Kingdom: The Far Reaches" and It's not pure adventure too. So please bring some adventure games for adventure lovers.
I know GOG.com is now on beta state (and they will bring more games later) but we grown up with playing adventure games especially Lucas Arts' classics and only one adventure game now is not enough.

King's Quest, or Space Quest as an all in one series. You can get them at the store for (I think) $14.99, but of course it would also come with some sort of handy-dandy DRM attached.
I would buy them from gog if they every can get them here.