Some time a go I had to work on a heavy XML processing application and found out VB.NET had a nice XML literals feature. I completed the development using it and it was a joy.

EDIT: To anyone who didn't get it, XML literals are used like this:

  Dim myContact = <contact><%= p.Name %></contact>
  Dim allContacts = <contacts><%= From c in db.contacts Select <contact><%= c.Name %></contact> %></contacts>