T-Mobile Sidekick LX 2009

T-Mobile's Sidekicks have been cult favorites stretching all the way back to the original grayscale model -- a device with a design only a mother could love, may we add -- when it launched nearly seven years ago. Though the unusual form factor with the addictive spring-loaded pivoting swivel has largely prevented it from attracting a mainstream audience, the countless teens and twenty-somethings who've latched on to the Hiptop ecosystem have cited many of the same reasons for loving it since day one: an easy, foolproof UI, push email, high-quality customizability, decent web browsing capabilities, and a stellar messaging-optimized layout (remember that QWERTY was little more than a twinkle in most manufacturers' eyes back in 2002).