Craig,
2 stories spring to mind of when I was hiring BAs.
The first is the BA who I asked to prove a 3 entity data model was in 3rd normal form and he said "easy! I normally prove them to 4th normal form!". I don't know what 4th normal form is but asked him to go ahead and he started out by saying he would need another entity as there were only 3 which would only allow him to get to 3rd normal form...
The second is the BA who I asked to critique a 3 step process model. He said there was nothing wrong with it and challenged me to show him where it was wrong. When I did the first error (it had no exit route!) he told me to get a life!
To be fair, I don't know if they were duds as I never hired them!
Guy