Such as, NAEboo, GOONgans, Count DOUGHKOO, AlderAAAn, etc. What gives? If that's the way they're SUPPOSED to be said, then why didn't he correct the actors? I happen to think his pronunciation of Dooku allows you to to take the character much more seriously than DOOKOO.
On a similar note, he also refers to lightsabers as laserswords most of the time.