Chart-based stories on Creed, Usher, Shaggy, and No Doubt.

TWICE THE CREED: For the third time in the last eight years, one act occupies the top two slots on Billboard's Top Pop Catalog Albums chart. Creed, whose "Weathered" (Wind-up) recently completed an eight-week reign on The Billboard 200, remains No. 1 with "Human Clay" and rebounds 3-2 with "My Own Prison."

The last time one artist held the top two positions was last summer, when the late Eva Cassidy was featured on ABC-TV's "Nightline." Before that, you'd have to go back to 1994 to find one act in the top two places. Mannheim Steamroller's first two holiday albums led the tally during Christmas week that year.

SO 'BAD': Will Usher's "U Got It Bad" (Arista) end up as the longest-running No. 1 song of from the class of 2001? It's possible, as this week, the single racks up a sixth week atop The Billboard Hot 100.

It's the third title that advanced to pole position in 2001 to remain on top for six weeks. The other two are "Fallin'" by Alicia Keys and "Family Affair" by Mary J. Blige. These three songs are all tied for second place among the longest-running No. 1 hits of 2001.

The champ, at the moment, is Janet Jackson's "All for You," which ruled for seven weeks. If Usher's "U Got It Bad" is still No. 1 next week, it will tie the Jackson song, and an additional week will push it into first place all by itself.

SHAGGY STORY: His "Hotshot" album on MCA wasn't considered a reggae album and did not appear on Billbaord's Top Reggae Albums chart, but a new Shaggy album debuts on that list this week. "Mr. Lover Lover - The Best of Shaggy," released by the artist's former label, Virgin, enters the survey at No. 3.

Greatest hits collections by Bob Marley & the Wailers and UB40 fill the top two positions.

DOUBT FULL: No Doubt continues to enjoy its highest-charting single, as "Hey Baby" (Interscope), featuring Jamaican artist Bounty Killer, marches 9-6 on The Billboard Hot 100.

It's the first-ever top-10 hit for the band from Orange County, Calif. "Don't Speak" never appeared on the Hot 100, as airplay-only tracks weren't allowed to chart when it was popular. Had "Speak" been commercially released, it could have been one of the biggest hits of the rock era, as it remained No. 1 on Billboard's Hot 100 Airplay chart for 16 weeks.

No Doubt lead singer Gwen Stefani recently had an all-time career high by reaching No. 2 on the Hot 100 with "Let Me Blow Ya Mind," a song by Eve that featured Stefani as a guest artist. If "Hey Baby" continues its upward movement, it could tie or surpass the mark established by "Let Me Blow Ya Mind."