Different to most other posts here, but still a bargain if you're looking for it! The content of all EUP (Edinburgh University Press) journals will be free to all users throughout January and February 2009.
Just visit their website - http://www.eupjournals.com/action/showPublications?display=b… - to see the choice of 35 academic journals. Access to these is usually incredibly (over)pricey; downloads are in pdf format.