This Week in Billboard Chart History: 25 Years Ago, New Kids on the Block 'Step'-ped to No. 1

Ebet Roberts/Redferns
Jordan Knight, Joey McIntyre, Danny Wood, Donnie Wahlberg and Jonathan Knight of New Kids on the Block. 

In 1990, 'Step by Step' ruled the Hot 100. Plus, remembering chart feats by Nelly, Michael Jackson & Katy Perry.

Your weekly recap celebrating significant milestones from more than seven decades of Billboard chart history.

June 29, 2002
Nelly began a whopping 14-week command of the Billboard Hot 100, as "Hot in Herre" reached No. 1. After the song completed a seven-week reign, he replaced himself at the top for seven more weeks with "Dilemma," featuring Kelly Rowland.
 

June 30, 1990
New Kids on the Block-mania rolled on, as "Step By Step" began a three-week rule atop the Billboard Hot 100. The goal of the instructional song? You remember: how "to get to you, girl."

July 1, 1989
Perhaps surprisingly, Milli Vanilli didn't reach No. 1 on the Billboard Hot 100 with its first smash, "Girl You Know It's True," which peaked at No. 2. On this date 26 years ago, however, the duo scored its first of three leaders with "Baby Don't Forget My Number."
 

July 2, 1988
Michael Jackson made Billboard Hot 100 history, as "Dirty Diana" reached No. 1, becoming the fifth leader on the list from his album Bad. The set remains the only album by a male artist to produce five Hot 100 No. 1s. Since, only Katy Perry's Teenage Dream (2010-11) has also yielded five toppers. Meanwhile, "Dirty Diana" is enjoying new chart life: Shaman's Harvest's hard rock cover has become a Mainstream Rock Songs hit.

July 3, 2010
Five years ago, Miranda Lambert completed a four-week residence atop Hot Country Songs with her first No. 1, "The House That Built Me." The following February, the touching ballad earned her a Grammy Award for best female country vocal performance.
   
July 4, 1970
The date that chart-watchers began keeping our feet on the ground and reaching for stars, thanks to Casey Kasem, as revered Billboard Hot 100 radio countdown American Top 40 debuted, 45 years ago today. The first song played? The Ironically titled "The End of the Road," by Marvin Gaye.
 

July 5, 2008
It went to No. 1 … and we liked it. Katy Perry scored her first Billboard Hot 100 No. 1, of nine to-date, with "I Kissed a Girl."