Came here to post about the plethora of sales on the eShop right now but I see Soren beat me to it. I've already picked up Armillo and Steamworld Dig, and just got around to finally connecting an external hard drive so I can download Pure Chess, Toki Tori 2+, and Resident Evil Revelations.
Don't forget, the Digital Deluxe Promotion ends next Wednesday, so it's worth checking to see how close you are to getting a $5 reward. I'm guessing that's part of why there's so many sales going on right now, combined with the people who got a system for Christmas, it's a good time to be putting games on sale. The sales on the eShop have changed from basically all starting on Thursday to updating throughout the week, so if there's nothing of interest on sale right now, it might be worth waiting to see if anything gets released Monday or Tuesday before just buying something for the sake of buying to get to that next reward.