Chart Beat now offers a sneak peak at chart action with a first-look edition on Wednesdays. On Thursdays, when all of our online charts are refreshed with the latest data, Chart Beat appears as always in its full form, spotlighting achievements from among our entire menu of charts.

BEST IN SHOW: This year's Academy Award winner for Best Original Song, "Jai Ho! (You Are My Destiny)," by A R Rahman & the Pussycat Dolls featuring Nicole Scherzinger, becomes the first such honored title to grace the Mainstream Top 40 radio airplay chart in six years. The track, from Best Picture victor "Slumdog Millionaire," bows at No. 37.

Here is a rundown of the eight previous Best Original Song Oscar winners to appear on the list since its 1992 launch:

Year, Artist, Title (Movie), Peak Position

2002, Eminem, "Lose Yourself" ("8 Mile"), No. 1
1998, Whitney Houston & Mariah Carey, "When You Believe" ("The Prince of Egypt"), No. 35
1997, Celine Dion, "My Heart Will Go On" ("Titanic"), No. 1
1996, Madonna, "You Must Love Me" ("Evita"), No. 23
1995, Vanessa Williams, "Colors of the Wind" ("Pocahontas"), No. 18
1994, Elton John, "Can You Feel the Love Tonight" ("The Lion King"), No. 3
1993, Bruce Springsteen, "Streets of Philadelphia" ("Philadelphia"), No. 13
1992, Peabo Bryson & Regina Belle, "A Whole New World" ("Aladdin"), No. 1

FLEX-ING HIS CHART MUSCLE: A year ago this week, Flex rose to his first week atop Hot Latin Songs with his first entry, "Te Quiero." That song would spend 20 weeks at No. 1 and earn the honor of the chart's top title of 2008.

This week, exactly one year later, he collects his second leader, as "Dime Si Te Vas Con El" stampedes 18-1. The move marks the third-largest leap to the summit dating to the chart's 1986 inception. On the survey dated March 3, 2007, Mana flew 22-1 with "Manda Una Senal." That mark stood for 11 weeks until May 19, 2007, when Enrique Iglesias catapulted 49-1 with "Dimelo."

Flex's new No. 1 nets Greatest Gainer honors, increasing by a whopping 93% on the audience-based list to a total of 12.5 million listener impressions.


SOULJA BOY TELL 'EM MARCHES TO NO. 1:
Soulja Boy Tell 'em dials up his second No. 1 on the Rhythmic radio chart, while featured artist Sammie inks his first, as "Kiss Me Thru the Phone" mobilizes 2-1.

The song's coronation marks the first No. 1 for its lead artist since "Crank That (Soulja Boy)" spent seven weeks at the summit in 2007. Sammie's guest spot on "Kiss" heralds a triumphant return for the singer, who had last charted in 2000, when "I Like It" peaked at No. 22 and "Crazy Things I Do" reached No. 33.

POISON CONTROL: "Cyanide" becomes Metallica's seventh Mainstream Rock chart champion, leaping 4-1. The quartet, set to be inducted into the Rock and Roll Hall of Fame April 4, has charted at the format since 1989, while its history on the Billboard 200 album chart dates to 1984.

Here is a look at the group's No. 1 Mainstream Rock tracks:

"Cyanide," 2009
"The Day That Never Comes," 2008
"St. Anger," 2003
"I Disappear," 2000
"No Leaf Clover," 2000
"Turn the Page," 1998
"The Unforgiven II," 1998

COMPLETE BEAT: Check back tomorrow for this week's expanded Chart Beat encompassing all of our charts. Following Carrie Underwood and Randy Travis' performance of "I Told You So" on "American Idol" last week, we'll see how high the now digitally-available duet version storms Hot Digital Songs. Travis will make his own splash on the Billboard 200 with his new collection, "I Told You So: The Ultimate Hits of Randy Travis."