Their Cyber Monday deals include lots of hot titles along with plenty of Lightning Deals that feature both hardware and software. The PlayStation Vita 3G/WiFi bundle will be available for $249.99 between 9:10 a.m. PST and 1:10 p.m., for example, so strike while the iron's hot.
Game deals include Tekken Tag Tournament 2 ($29.99), Resident Evil 6 ($39.99), Final Fantasy XIII-2 ($14.99), Deus Ex: Human Revolution ($14.99), and XCOM: Enemy Unkown ($34.99). Later, you can spring on the Ultimate Combo Packs for inFamous and Ratchet & Clank for $49.99 apiece, Halo 4 with a $20 Amazon Gift Card for $59.95, RAGE on PC for only $8.99, and a Chimaera Wireless Gaming Headset for $129.99. Between GameStop and Amazon, you should be able to find what you want today; there really aren't any bad gifts there, and you can always save a bit when shopping for yourself.
By the way, I hate to do this, but I have to say that FFXIII-2 for only $15 is a steal. I didn't like that the game fell into the FF universe ('cuz it doesn't feel like FF) but for what it was, I loved it. And given its length and scope, it'd be the epitome of "bang for your buck."