Humble Bundle now has a store

http://www.humblebundle.com/store

sofar 9 titles of wich 5 are for linux and 3 for mac. games are labeled if they are drm free and/or include a steam key(at the moment 5 are drm free and all include a steam key)

i can recommend all the linux titles they all work wonderfully on linux and all are really good.

List of games currently(wow that copy paste worked out great dont have to change a thing)
Steam DRM-free download Mac OS X Windows Linux
$29.99 $14.99
Prison Architect Alpha

Steam DRM-free download Mac OS X Windows Linux
$14.99 $7.49
Rogue Legacy

Steam Windows Linux
$24.99 $6.25
Euro Truck Simulator 2

Steam Windows
$24.99 $6.25
Chivalry: Medieval Warfare

Steam DRM-free download Mac OS X Windows Linux
$14.99 $7.49
Don’t Starve

Steam DRM-free download Windows
$9.99 $4.99
Gunpoint

Steam DRM-free download Windows
$14.99 $4.99
The Swapper

Steam Windows Linux
$24.99 $6.25
Natural Selection 2

Steam Windows
$24.99 $6.25
Orcs Must Die! 2 – Complete