In a legal case he's the equivalent of Mr. X; in real life, he was a member of the band X. Who is he?

In a 1961 speech, who said "Ask not what America will do for you, but what together we can do for the freedom of man"? In a 1985 book, which financier called arbitrage "Wall Street's best kept money-making secret"? In a 2002 blockbuster, who played both Peter Parker and "your friendly neighborhood Spider-Man"? In a leaf, which food-making process takes place in the palisade and spongy cells? In a New York magazine article, Tom Wolfe gave the 1970s which self-centered nickname? In a Disneyland ride that dates from the park's 1955 opening, you spin in what? In Acts 23, St. Paul declares himself to be what, a member of a Jewish sect noted for strict obedience to tradition? In ads, celebrities and their children promoted "the new generation of" which company's cars?