Holiday Buying Guides are in vogue.
PC.ign has their
Holiday Buying Guide up with so far only action and adventure titles. It's worth a look though as there are many, and will be updated with the other genres soon I would think.
More yuletide fun is at
Gamingera and is treated more like an award ceremony than a gift guide, but nevertheless has good recommendations. Find that one by skipping over to this
link.