Here is the answer to the timeline, in which year did the following things take place?

Pepsi pulled out of its 5 million dollar endorsement deal with Madonna after objections to her Like A Prayer video.

Jerry, Elaine, George and Kramer began worrying about nothing on the premiere of Seinfeld.

Christian Slater and Winona Ryder found a new use for Drano in the black comedy Heathers, in 1989, and that year, a DJ stumbled across a 1983 song from Sheriff that had barely charted and actually led to the band's breakup.... it took 6 years, but they finally achieved one-hit wonder’s "When I'm With You"