50 Cent's "21 Questions" featuring Nate Dogg has a lock this week on three of Billboard's major singles charts. The song is No. 1 on the Hot 100 for a second-straight week, and leads the Hot R&B/H

50 Cent's "21 Questions" featuring Nate Dogg has a lock this week on three of Billboard's major singles charts. The song is No. 1 on the Hot 100 for a second-straight week, and leads the Hot R&B/Hip-Hop Singles & Tracks chart and the Hot Rap Tracks tally for a sixth week in a row.

The rapper of the moment maintains four cuts on the Hot 100, three of which are in the top-10. Lil' Kim's "Magic Stick" featuring 50 Cent is up 10-8 on the Hot 100, and his former No. 1 "In Da Club" is at No. 9. He also has "P.I.M.P." at No. 60. On the Hot R&B/Hip-Hop Singles & Tracks chart, 50 Cent appears on a whopping eight entries.

Eyeing a run at the top is Beyonce's "Crazy in Love" featuring Jay-Z, which is quickly making its way up the Hot 100. The track is the chart's fastest-growing cut at radio for the second-straight week, and bolts 27-13 in its third week on the tally. It's also up 15-10 on the Hot R&B/Hip-Hop Singles & Tracks chart.

Jewel's "Intuition" soars 43-30 in its fifth week on the Hot 100. The single benefits from a spike in sales, and is the chart's fastest-growing track at retail. From her forthcoming Atlantic album "0304," the cut is the third best-selling single in the U.S., according to Nielsen SoundScan. "God Bless the U.S.A.," from the second-season "American Idol" finalists, is the top-selling single in America for the sixth straight week.

At No. 72, Ludacris' "Act a Fool" is the Hot 100's top debut. Other new entries are Sean Paul's "Like Glue" (No. 89), Freeway's "Flipside" featuring Peedi Crakk (No. 95), and Kiley Dean's "Make Me a Song" (No. 99).

On Billboard's Hot Country Singles & Tracks roundup, Diamond Rio's "I Believe" extends its reign at No. 1 to a second-straight week. Further down, the Dixie Chicks' "Godspeed (Sweet Dreams)," performed during last week's Academy of Country Music Awards broadcast, enters the chart at No. 59. It's the trio's first new entry on the chart since lead singer Natalie Maines criticized President Bush during a London concert.

Trapt's "Headstrong" maintains its lead for the second-straight week on the Billboard's Modern Rock Tracks tally, and Audioslave's "Like a Stone" tops the Mainstream Rock Tracks chart for an eighth-straight week.