Beyoncé and Jay-Z cruise to their eighth-straight week atop Billboard's Hot 100 with "Crazy in Love." In its 15th week on the chart, "Crazy" once again fends off Chingy's "Right Thurr" (No. 2) an

Beyoncé and Jay-Z cruise to their eighth-straight week atop Billboard's Hot 100 with "Crazy in Love." In its 15th week on the chart, "Crazy" once again fends off Chingy's "Right Thurr" (No. 2) and still-gaining "Shake Ya Tailfeather" from Nelly, P. Diddy and Murphy Lee, which advances 4-3.

"Shake Ya Tailfeather" actually saw more airplay in crossover markets than "Right Thurr," but Chingy's cut received a significant boost from retail sales. "Tailfeather," from the former No. 1 soundtrack to "Bad Boys II" (Bad Boy/Universal), is not currently available at retail.

"Tailfeather" bounds 11-7 on Billboard's Hot R&B/Hip-Hop Singles & Tracks chart, where it is the fastest-growing track at radio. The move gives P. Diddy his 14th top-10 single on the R&B/Hip-Hop tally. It's the fourth top-10 hit for Nelly and the second for Murphy Lee, who appeared on Nelly's "Air Force Ones."

Pharrell's "Frontin'" featuring Jay-Z is in charge of the Hot R&B/Hip-Hop Singles & Tracks chart for third-straight week. 50 Cent's "P.I.M.P." is at No. 2 on that tally and leads the Hot Rap Tracks chart for the second week in a row. The video for the cut is the most-played clip on MTV and BET.

Back on the Hot 100, Beyoncé's follow-up to "Crazy in Love" continues to rocket up the chart. "Baby Boy" featuring Sean Paul soars 29-19 and is the chart's fastest-growing track at radio.

The Hot 100's fastest-growing retail title is Baby Bash's "Suga Suga" featuring Frankie J, up 71-56. The increase in sales puts the single No. 12 on Billboard's Hot 100 Singles Sales tally.

Teen star Hilary Duff replaces Clay Aiken's "This Is the Night/Bridge Over Troubled Water" as the top selling single in the U.S., according to Nielsen SoundScan. Duff's "So Yesterday" sold 14,500 copies and moves 2-1 on the Hot 100 Singles Sales chart. Even so, a dip in airplay causes a 53-55 fall on the Hot 100.

The top debut on the Hot 100 is "Here Without You" from 3 Doors Down at No. 64. Other notable entries include Pat Green's "Wave On Wave" (No. 77), Ashanti's "Rain on Me" (No. 78) and Live's "Heaven" (No. 79).

Alan Jackson's duet with Jimmy Buffett "It's Five O'Clock Somewhere" maintains its lead on Billboard's Hot Country Singles & Tracks roundup for a fourth-straight week. As reported yesterday, Jackson's "Greatest Hits Vol. II" opened at the top of The Billboard 200. Further down the country tally, Buddy Jewell's "Help Pour Out the Rain" jumps 12-8.

There are no changes on the top of Billboard's rock airplay charts this week. Linkin Park's "Faint" is No. 1 on the Modern Rock Tracks list for a fourth-straight week and Staind's "So Far Away" is the No. 1 cut on the Mainstream Rock Tracks chart for the third-straight week.