Boxes of Krispy Kreme doughnuts are seen in several episodes; there were no Krispy Kreme locations in Wisconsin until after 2000.
The show was originally titled "Teenage Wasteland" or "The Kids are Alright" but those were songs by The Who and, legally, Fox couldn't get permission to use them. They renamed the show "Feelin' Alright" to show the focus groups. However, nobody really liked the name. After the focus groups airing, the audience were heard saying they really liked that show about the 70's or that 70's show - and the name stuck.