We recently decided we'd try something new and look at a fresh new way to manage the Data Context object in LINQ.
I've posted an entire article on it at Code Project: http://www.codeproject.com/KB/linq/LinqAndUnity.aspx
Basically this is using Dependency Injection to manage the LINQ Data Context object between business logic classes. I think its a pretty cool idea but all feedback is much appreciated as there could be way cooler ways to use these two technologies together!