10 Movies That Aged Badly For Surprising Reasons

Grease is the story of a bunch of horny teens in the 1950s who like cars and dancing, based on the 1971 stage musical of the same name. Produced on a $6 million budget it brought in a whopping $395 million. And that's in 1978 money, that would be closer to $695 million when adjusted for inflation. Considered one of the greatest films ever made, and on many lists the #1 musical film ever made.

So what makes it age so badly? Well aside from half of the songs being about date rape, Coca-Cola does. That's right - after several pivotal scenes were already shot the producers arranged a product placement deal with Pepsi, Coke's major competitor. As such they had to re-shoot or remove all Coca-Cola paraphernalia. Since re-shooting the scenes was deemed too costly they simply put matte stock over top of the Coke signs and menus.

Likewise there is a scene wherein the two leads, played by John Travolta and Olivia Newton-John, make out near the end of the film. Unfortunately, that scene was accidentally cut and lost, only black and white negatives exist and the technology to recolor it weren't up to par back in '78. Would have never guessed technology and marketing were the reason Grease wouldn't hold up today, did you?