As a child of the 80's, I feel remiss in neglecting to honor those foods that I most enjoyed at the time...
Here's a sampling of the great and not so great of the era.
Superman Peanut Butter; The cereal my mom would never buy me - Cookie Crisp; Zotz Candy made an uncomfortable fizz in your mouth
Steak-Umms are a coronary bypass waiting to happen; Before there was the Matrix, there was Bill and Ted's Excellent Cereal; The candy you're never likely to see again - one of my personal favorites: Candy Cigarettes.
Wonderful, waxy Magic Shell; Freshen up, the only gum to spill its warm insides into your mouth; Fun Dip was Pixie Stix, but messier; The McDLT from McDonald's featured a special container that kept the hamburger hot, the tomato cool. They should've spent their money on tomatoes that don't taste like air. Watch a commercial for this sandwich featuring a giddy, fully coiffed Jason Alexander at this site.
My favorite childhood candy - cheap, fakey chocolate insides with a shell. Kind of like generic 3rd world M&M's: Sixlets; Orange Julius stands were at every mall - except mine. Us kids in Podunk got a knockoff called The Orange Bowl; Microwave cakes, brownies, french fries, milkshakes and hamburgers had one thing in common - they all sucked balls.
Gummi Bears invaded from Germany and gave all of us major stomach aches. Don't even get me going on Gummi Rats; Pepsi Clear went the way of New Coke, Pepsi AM, Pepsi Free, and Pepsi Lite. Sizzlean - "Now there's something Leaner!"
Triumphs of 1980's Crap Foods:
Diet Coke, Diet Pepsi, Microwave Popcorn, Chicken McNugget, Fruit Roll Ups, Frozen Yogurt, Hot Pockets, Tombstone Pizza, Doritos, Pizza Rolls
Defunct 1980's Kool Aid flavors: Apple, Sharkleberry Fin, Sunshine Punch, Pink Swimmingo, Breat Bluedini, Mountain Berry Punch, Purplesaurus Rex.