是否可以创建自定义ASP.NET MVC强类型HTML帮助程序？

I was wondering if it is possible to create a custom strongly typed HTML Helper in ASP.NET MVC 2? Creating a regular (read not-strongly-typed) helper is straightforward but i am having difficulty creating strongly typed versions. For example, I would like to create a DatePickerFor html helper...I was wondering if it is possible to create a c