.....Hollaback Girl by Gwen Stefani. Gwen was riding high as a kite with her debut solo record Love, Angel, Music, Baby and the third single released form the album was a HUGE hit. Hollaback Girl was a throwback to 80s pop/rap/dance music and hit #1 on the Hot 100 on May 7, 2005 and stayed there for 4 consecutive weeks. Written with The Neptunes (Pharrell and Chad Hugo), Hollaback Girl is accompanied by a colorful video filmed in L.A. featuring cheerleaders, a marching band and some bad-ass cars. The song was nominated for Best Female Pop Vocal Performance and Record of the Year at the Grammy Awards that year. Work!! Anyway, here is the #1 song from 10 years ago today, Hollaback Girl. Enjoy!