We knew him as the inspiration behind much of today's hard-edged rock music. And now another founding father of modern rock and roll is gone. Bo Diddley died on Monday, June 2, of heart failure after months of declining health. He was 79 years old, but his raw, spikey guitar sound will live on for generations yet to come. He had come back to his home in Archer, Florida, after suffering a debilitating stroke in August of 2007 while touring in Iowa. With his bigger-than-life stage personna, his dark glasses, black hat, and rectangular guitar, Bo was a sure-fire inductee into the Rock and Roll Hall of Fame, but he also had a star on Hollywood's Walk of Fame, and received a well-deserved lifetime achievement award in 1999 at the Grammy Awards. He played gigs in the Bush, Sr. and Clinton White Houses, then quipped, "It didn't put no figures in my checkbook." For those who first picked up a guitar in the 1960s, it was imperative to know Bo's classic, "I'm a Man," which was famously covered by The Yardbirds with Jeff Beck on lead guitar.