This is a recipe I used to make for your dad ALL THE TIME.  He especially loved it when watching The Patriots play. I got the recipe when he was in seminary.

Ingredients

• 1 c unpopped popcorn
• 1 c butter
• 2 c brown sugar
• 1/2 c corn syrup
• 1 t salt
• 1/2 t baking sode
• 1 t vanilla

Instructions

• Pop the popcorn and add to a large roasting pan, coated in non-stick spray (the pan, not the popcorn)
• Melt the butter in a large saucepan.  Stir in brown sugar, corn syrup, and salt.  
• Bring to a boil, stirring constantly.  Boil 5 min without stirring.  
  
• Remove from heat and add in baking soda and vanilla.
• Pour over popped corn and stir well.  Back at 225º F for one hour, stirring every 15 min.
• Cool before eating, or do what your dad always did and try to eat before it cools and burn your mouth with hot sugar :)