1: Hawaii, in Honolulu.
4: Wichita, Kansas; Jimmy Webb wrote the song "Wichita Lineman".
6: a) he's against; b) he's in favour; c) he's against.
7: He's left-handed.
8: 'Do the Right Thing'; Spike Lee.
9: 'Moby-Dick' by Herman Melville.
10: 'Casablanca' and 'One Flew Over the Cuckoo's Nest'.
11: Marijuana and cocaine.
13: Robert Kennedy.
14: He won Best Spoken Word Album, for the audio version of 'Dreams From My Father'. He won a second in 2008 for 'The Audacity of Hope'.
15: 6ft 1.5in (1.87 metres).
16: Because he was Rev Jeremiah A Wright, who denounced the United States, and Hillary Clinton, in an outspoken video.
17: Aretha Franklin. Her father, Clarence LaVaughn Franklin, organised the 1963 Walk to Freedom, led by King.
18: He worked in a Baskin-Robbins ice-cream shop as a teenager, and can no longer stand to look at the stuff.
19: Zariff's in Chicago, once a week (it costs him $21).
20: John McCain.
21: Walking around with their underwear showing above their saggy trousers.
22: He applied to appear in an all-black calendar.
23: Chilli (with cumin, oregano, turmeric, basil and a lot of chilli powder.)
25: Hart Schaffner Marx; about $1,500.
27: "Blessed by God" in Arabic.
28: The fishing town of Obama, west Japan, which celebrated its namesake's success with a party where "Obama fish burgers" were served. "Obama" is Japanese for "small shore".
29: 'New Statesman'.
30: By means of a lookalike puppet.
31: He was killed in a car accident in 1982.
32: Ann Dunham Sutoro, as she styled herself at the end of her life, contracted uterine and ovarian cancer and died in Hawaii in 1995, aged 52, shortly after her son published 'Dreams From My Father'.
33: Paris Hilton.
35: His grandmother, Madelyn Dunham.
36: Civil rights litigation.
37: Three: one in his pocket, one on his desk and one beside his bed.
39: The 'Sequoia', a 125-ton yacht built in 1925 and available to all presidents. Richard Nixon played "God Bless America" on the ship's piano after he decided to resign.
40: It's a black metal wristband engraved with the name of Sgt Ryan David Jopek, killed by a roadside bomb in Iraq in 2006. Jopek's mother, Tracy Jopek from Wisconsin, gave it to Obama last February.