Happy Birthday to "Pride & Prejudice" star Keira Knightley (1985), "Just Friends" star Amy Smart (1976), Smashing Pumpkins guitarist James Iha (1968), country star Kenny Chesney (1968), "Dirty Dancing" actress Jennifer Grey (1960), television host Leeza Gibbons (1957), "Jiminy Glick" actor Martin Short (1950), R&B singer Teddy Pendergrass (1950), comedienne Vicki Lawrence (1949), Aerosmith singer Steven Tyler (1948), Supreme Diana Ross (1944), "Las Vegas" star James Caan (1939), actor Alan Arkin (1934), "Star Trek" legend Leonard Nimoy (1931), "Cool Hand Luke" actor Strother Martin (1919; d. 1980), playwright Tennessee Williams (1911; d. 1983), and poet Robert Frost (1874; d. 1963).