Prism Legal has a good compilation of corporations using Legal Outsourcing and some of the vendors providing them.
As with this list, I often feel the authors based abroad lack a feel of the real situation on the grounds...
Legal Process Outsourcing is slated to be the next mover and shaker. Since 2005, this blog has been tracking the activity in the space now variously being called LPO, Legal Process Outsourcing, Legal Process Offshoring, Legal Services Offshoring. Watch this blog for company press releases, news from the ground and commentary on developments.