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[Steam] WINTER SALE 2012(r/GameDeals)
Or you could pay $2.49 more and get:
Both Bioshocks and Duke Nukem Forever Complete (DNF + both DLCs):
Duke Nukem Forever (not complete) Borderlands GOTY The Darkness II.
EDIT: Thanks to J-ohn for pointing out that
“Nothing in diogenesl’s post indicated he’s from the US. And your deals are USA ONLY. Borderlands 1 GOTY Edition is 75% off in steam for everyone”
Added for clarity. Thanks J-ohn!