Not a gainer myself. But I have trouble stopping if I have really good French Onion Dip and Ruffles potato chips. Either the home mixed type with sour cream and onion soup mix. Or Tostito's brand are my favorites.
Chips and salsa! I can easily go through a whole bag, even after a big dinner. There is something about the crunch and the salt of the chips plus the heat of the salsa. I love it.