Pop your popcorn and put popcorn and peanuts in a very large bowl (or a big brown paper grocery bag).
Over medium heat boil butter, brown sugar, salt and corn syrup for 5 minutes (stirring constantly). Remove from heat and stir in baking soda. Pour over popcorn in the bowl (If you're using the brown paper bag, roll closed and shake well). After the popcorn is coated well, spread onto a cookie sheet. Spread chopped Snickers over top of popcorn and put in oven for 5 minutes.
Remove from the oven and drizzle melted chocolate over top of popcorn.
Notes
This popcorn will keep in an airtight container for up to 5 to 7 days.