Mild-mannered About.com blogger Arthur Levine leads something of a double life. When he's not traveling up and down the state looking for the best places to go and things to do, he's an intrepid daredevil riding up and down roller coasters seeking the best thrills. Among his earliest memories, he remembers sitting for hours on the sand at Revere Beach watching the rickety Cyclone roller coaster (sadly gone, along with the rest of Revere's seaside amusements) go through its paces--and he's been mesmerized by the thrill machines ever since. Today, Levine gets to ride and write about coasters, as well as theme parks, water parks, and other amusement industry fun at About.com. Final warning: No standing beyond this point as Levine reveals his top 10 (plus an honorable mention) roller coasters in North America.