Of all the egg rolls I've ever eaten, the best have been from Moy's Restaurant in Elkhorn, WI.
What sets these egg rolls apart from the rest? Peanut butter.
From the description on their menu page:
Small chunks of chopped barbecued pork, shrimp, celery, cabbage and a touch of peanut butter in egg roll wrapper.
I always thought this was an odd thing, even though it works very well, but a quick google search shows just how common it is: over 2 million results for "egg rolls peanut butter", many being recipes or links to restaurants.
(spudart originally asked me to blog about this on 2/29/12)