This is just a little bit that I keep forgetting for some reason.  Lets say I have a gridview, and in it I want to display the date.  Just the date, but I do not want to use the SQL method to format the date.  You just add the format string to the binding.

Text='<%# Bind("myDate", "{0:MM/dd/yyyy}") %>'

This really would work with any kind of formatting that you needed to do.  I just felt that date would make an easier example.