Very interesting article, definitely worth seeing.
Btw, though, shouldn't the columns be NCHAR(2) instead of NVARCHAR(2)? It's a waste of space and processing overhead to make a 2-byte column variable.
SQL DBA,SQL Server MVP(07, 08, 09) Prosecutor James Blackburn, in closing argument in the Fatal Vision murders trial:
If in the future, you should cry a tear, cry one for them [the murder victims]. If in the future, you should say a prayer, say one for them. And if in the future, you should light a candle, light one for them.