AutoMapper

 Mapper.CreateMap<userEntity, userViewModel>();
 var userVm = new userViewModel();
 userVm = Mapper.Map<userViewModel>(user);

Github AutoMapper / AutoMapper

https://github.com/AutoMapper/AutoMapper

Using AutoMapper in Your ASP.Net MVC Applications

http://www.codeguru.com/columns/experts/using-automapper-in-your-asp.net-mvc-applications.htm

View Model pattern and AutoMapper in ASP.NET MVC Applications

http://weblogs.asp.net/shijuvarghese/archive/2010/02/01/view-model-pattern-and-automapper-in-asp-net-mvc-applications.aspx

ASP.NET MVC - Mapping with Automapper

http://stackoverflow.com/questions/4608274/asp-net-mvc-mapping-with-automapper