Odd One Out

Can you work out which is the odd one out and why?


1Alan Shepard, Neil Armstrong, John Glenn, Buzz Aldrin?
2Mean Machine, Bulletproof Bomb, Compact Pussycat, Dragon Wagon?
3Albert Einstein, Leonardo Da Vinci, John F Kennedy, Marco Polo?
4Jackson, Collins, Denver, Austin?
5Death On The Nile, The Sign Of The Four, The Mysterious Affair At Styles, Sparkling Cyanide?
6Saruman, Arwen, Elrond, Legolas?
7Northern, District, Central, Eastern?
8Silver, Ivory, Marble, Diamond?
9Diana Ross, The Beatles, Stevie Wonder, Ferry Aid?
10"A burp is not an answer", "The new kid is a person too", "Goldfish don't bounce", "I was not the sixth Beatle"?