Few rock artists were as fearless and uncompromising as the late/great John Lennon. Whether it be standing up for causes he believed in, promoting peace, or penning some of rock's all-time classic tunes (while taking unexpected musical twists and turns along the way), Lennon has become one of rock's most unforgettable figures. Tragically, his voice was silenced in 1980 (shortly after turning 40) - just as he had re-entered the public eye, after a...