Dan Rigsby talked about Oslo.  Oslo is a way to write languages.  It allows DSLs to be created and they can be used to generate code and/or SQL.  I like Dan's speaking ability.  He gets excited and enthusiastic about his topics.  He had demo problems.  His VPC was really, really slow.  It's not completely his fault but he did say the usual excuse, "It worked for me last night..."  I definitely would go see Dan present again.  I believe that he will figure out the demo glitches and will make it only better.

Oslo is beyond bleeding edge technology.  It's more like hemoraging edge.  There are some interesting concepts that Microsoft is toying with.  I always take these ideas with a grain of salt.  I look at it as Microsoft presents a concept and see if it sticks in the dev community.