A quick update:
Many of the deals from the weekend have expired and I'll be updating the list sometime today.
However, for those of you who missed the Modern Warfare 2 deals on Friday, Amazon has Modern Warfare 2 Hardened Edition on sale as a lightning deal for just $47.99. Doesn't get much better than that for a collector's edition.
to see the current list of lightning deals, where you will hopefully find this one still available. It was about 20% sold out when I last checked and the deal ends at 2PM EST regardless.