As I'm sure you have already heard, Diablo Cody and the Coen Brothers won the top prizes at the WGA awards last night. Considering that the results were "leaked" when the nominations were announced and there was no ceremony, it was just a regular old night.
It's really hard now not to seriously look at both these films are locks for the screenplay categories. The WGA is not the best indicator, but it's done well recently. Both original and adapted screenplays have matched the last three years at the Oscars. And with another two strong scripts, you have to like the chances of both Juno and No Country.