Hah, when I read the topic title, before I had clicked on this link, I thought of the Nintendo Cereal System. I wasn't allowed to have Nintendo as a kid, but my mom did buy me this cereal, once. And it was the best damned cereal I've ever had.
Actually, that was probably just my six-year-old tastebuds talking at the time. If I recall correctly, Nintendo cereal was just Trix with the colors sorted. Blue and Red for Mario, Yellow and Green for Zelda. But it rocked.