Bowie's Berlin comeback -- if just for a retrospective David Bowie's richly creative years in gritty 1970s Berlin where he made his iconic "Heroes" album are explored in a new exhibition expanding on last year's hit London show. Handwritten lyrics with words crossed out for the title track about a couple meeting at the Berlin Wall, a letter he wrote to Marlene Dietrich, and the painting he did that helped him kick a drug habit -- are among some 60 additional items in the Berlin show that reveal the seminal period Bowie spent in the divided German capital. IMAGES AND SOUNDBITES