Jessica Letkemann Managing Editor managing editor Letkemann was previously an editor at Premiere, Spin, and Circus magazines. She also co-founded Pearl Jam fan site, contributed research to the book and Cameron Crowe film "Pearl Jam Twenty," and has written for a variety of pop culture publications.

U2 photographed circa 1990.

Top 10 Irish Musicians of All Time

As St. Patrick's Day celebrations bloom all over the land and thoughts turn to all things Irish, now is the perfect time to fete the musicians from the Emerald Isle who have made the biggest impact on the Billboard Hot 100 chart over the decades. This special list of the top 10 Irish artists tallies the biggest Billboard stars who were born, raised and/or formed in Ireland. Erin go Bragh!

P!nk's 20 Biggest Billboard Hits

To celebrate P!nk's birthday, we're taking a look at her biggest achievements on the Hot 100 chart.