I love these lists - I always view them as a challenge. Games I've never heard of you say? Right.
In fact I had only come across a handful of these and there are some excellent suggestions here for Christmas. I would definitely recommend Escape from Atlantis and I particularly like the look of Geistesblitz/2.0 (but maybe that's because it's not yet 9am and everything else looks like I'll need to use at least some of my resting brain.)