HEDY LAMARR - Hedy Lamarr was in her day frequently dubbed the most beautiful woman in the world, but it was Hedy's brain that made her stand out from the glamorous pack of 1940s' screen goddesses. Unbeknownst to many, the screen siren is credited with inventing an early form of the spread spectrum - a key technology behind modern-day wireless communication. YURI GAGARIN - Known as the - "Columbus of the Cosmos," Russian cosmonaut Yuri Gagarin entered the history books on April 12, 1961, when he became the first person in space. PATTI SMITH - The mid - 970s was a time of huge change in popular music. There were a surprising number of genuinely talented women and the godmother of them all was Patti Smith. MAGIC JOHNSON - For 13 years Earvin "Magic" Johnson dominated the NBA, dazzling fans and striking awe into his opponents with his phenomenal ball skills. He achieved sports immortality in 2002 when he was inducted into the Basketball Hall of Fame. FDR - In the dark days of The Depression and the tumultuous years of World War II, one man was instrumental in steering the US through these difficult times, President Franklin Delano Roosevelt.