Amen Brother 
, let the Church of John Lucas Prevail.
When i first read of your "crazy" predictions i actually thought 60 million by the end of 2008 was more likely than 20 million by this years end..... I still hold back because at heart I am a conservative fool and a non-believer, so originally pegged Wii for 18 million by this years end. (and 45 million + end of 08) but recently i have to say I was being almost as conservative as Nintendo themselves.... I still won't tout 20 million as a minimum number, but i would say that near the top of my 'probable' range (19-20.5 million)
If it manages that 20 million, then i am positive 50 million is a surety before 2009, and 60 million well within reach.
I am still sceptical as to whether Nintendo will up production in time, the recent statement that 1.8M p/month is a maximum disturbs me... I guess they are only talking about the maximum output of the current factories producing components, so that means as Nintendo doesn't produce chipsets etc in house they will have to find some company or factory capable of running their components.
