You Mac users probably know about this already, but in case you didn't, go here: http://www.macheist.com/ There's a bunch of software that they normally charge for, only it's freeeeeee for the next few days. No idea what's there - I'm not a Mac guy - but hey, maybe you are. Enjoy!
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I bought my daughter an off-lease computer from tigerdirect.com for Christmas, but it came without monitor or software (which was how I wanted it). They have a large range of options from barebones kits to CPU/HDD/keyboard/mouse to Desktop Bundles.