Jane Fonda opened up a big can of worms when her workout videos became such big hits in the 1980s. Suddenly celebrities of all kinds were releasing their own workout videos, and it didn't matter what was in them as long as the star on the cover had fans who would buy them. A gallery of those workout video covers might make you feel nostalgic, but more likely will just give you a laugh. Remember Marky Mark? He and his group The Funky Bunch entered the hip hop music industry in 1991 on the coattails of his big brother, Donnie, who was a member of New Kids on the Block. Marky Mark was known for performing in his tighty whities. Young people probably know him better as actor Mark Wahlberg. See the collection of superstar workout videos at TVOM.