Chocolate Chex was in the Albertsons/SuperValu store the last time I shopped for cereal. And I was shocked/amused to see "Chocolate Cheerios" as one of the dozen-or-so cereals in humungo-sized boxes at Costco when I shopped there today (I didn't NEED to buy anything at Costco, but when it's 92F degrees in SLOtown, it's the coolest place you can hang out for two hours).
Also, after Wil Wheaton posted his "Stand By Me Reunion" story, one of the funniest people I follow on Twitter tweeted a link to the "Body Buddies" cereal calling it "The official cereal of the film Stand By Me!"
The only one I remember is Super Sugar Crisp. We could choose only from a few cereals: Cheerios, Corn Flakes, Kix and Raisin Bran. The only time I had sugary cereals was when I went on sleep-overs at a friend's house. They usually had Cap'n Crunch or Honeycomb and it was bliss.