Heat oven to 300 degrees F. Spray a large roasting pan with Pam.
Pop corn in air popper (enough kernels to make 18 cups popped corn).
In Pyrex cup, microwave butter until melted (or melt in saucepan on stove). Stir
in corn syrup, vanilla extract and pudding mix with a fork. Pour syrup over popcorn
and toss with wooden spoon. Sprinkle salt over corn. Toss, taste, sprinkle. Do it
again until it says "Hello!"
Bake for 8 minutes.
Toss again. Determine if it needs another few minutes to make it glossy. Toss.