> If there was a pareve microwave 'butter' popcorn would you buy it?
> I know there exists an imitation butter flavor w/o milk, so in theory it
> should work (famous last words).

Orville Redenbacher makes an artificially flavored "Popping &
Topping Buttery Flavor Popcorn Oil" that is kosher pareve.  I use it
to pop and flavor popcorn, and it has a very good buttery taste.  A
microwave popcorn flavored with this would be great.