Check your Walmart stores for a specially marked Skippy Jar of peanut butter. It has the Spiderman image on it and on the top is a $4 off coupon for the Spiderman BluRay DVD combo when you buy the PB! Basically, you are getting the Skippy for free + $1 off the movie.
::DEAL IDEA::
Buy Skippy Spiderman Peanut Butter $3.13
Buy Spiderman Movie DVD combo pack $18.96
Use $4 peel coupon from Skippy
Total: $18.09
See TONs of Walmart deals HERE.