
This is an amazing piece of work by palindromic British mixologist Osymyso.
It's a few years old now, but this track set the bar very high for any would-be mash up artist who followed. Osymyso takes the intros to 101 different songs--mostly chart toppers--and creates a single cohesive 12-minute piece of music that works as well as any of the individual tracks from which it is made. 
Here's the list of samples used for Intro-Inspection
 1. "Rivers of Babylon" - Boney M
 2. "Wild Thing" - The Troggs
 3. "Hello" - Lionel Richie
 4. "Fairground" - Simply Red
 5. "Hey Jude" - The Beatles
 6. "Vienna" - Ultravox
 7. "Unchained Melody" - The Righteous Brothers
 8. "I Get Around" - The Beach Boys
 9. "Tainted Love" - Soft Cell
 10. "Bohemian Rhapsody" - Queen
 11. "No Woman, No Cry" - Bob Marley
 12. "Hound Dog" - Elvis Presley
 13. "Drinkin' in L.A." - Bran Van 3000
 14. "99 Luftballons" - Nena
 15. "The Lovecats" - The Cure
 16. "...Baby One More Time" - Britney Spears
 17. "Walk on the Wild Side" - Lou Reed
 18. "Can't Get Enough of Your Love, Babe" - Barry White
 19. "True" - Spandau Ballet
 20. "Leader of the Pack" - The Shangri-Las
 21. "The Message" - Grandmaster Flash
 22. "Wannabe" - Spice Girls
 23. "Pure Shores" - All Saints
 24. "Eye of the Tiger" - Survivor
 25. "Only You" - Flying Pickets
 26. "Need You Tonight" - INXS
 27. "Come on Eileen" - Dexys Midnight Runners
 28. "Praise You" - Fatboy Slim
 29. "Down Under" - Men at Work
 30. "Pump up the Volume" - MARRS
 31. "I Heard It Through the Grapevine" - Marvin Gaye
 32. "Relax" - Frankie Goes to Hollywood
 33. "3 a.m. Eternal" - The KLF
 34. "I Should Be So Lucky" - Kylie Minogue
 35. "Don't You Want Me" - The Human League
 36. "I Will Always Love You" - Whitney Houston
 37. "I Will Survive" - Gloria Gaynor
 38. "Shaft" - Isaac Hayes
 39. "The Pink Panther Theme" - Henry Mancini
 40. "Is There Something I Should Know?" - Duran Duran
 41. "Groove Is in the Heart" - Deee-Lite
 42. "Sweet Dreams (Are Made of This)" - Eurythmics
 43. "Oh Yeah" - Yello
 44. "Song 2" - Blur
 45. "Blue Monday" - New Order
 46. "Baggy Trousers" - Madness
 47. "You Really Got Me" - The Kinks
 48. "Sweet Child o' Mine" - Guns N' Roses
 49. "Wipe Out" - The Surfaris
 50. "Pretty Fly (for a White Guy)" - The Offspring
 51. "Firestarter" - The Prodigy
 52. "Barbie Girl" - Aqua
 53. "I'm a Believer" - The Monkees
 54. "Anarchy in the U.K." - Sex Pistols
 55. "I've Never Been to Me" - Charlene Duncan
 56. "(I Can't Get No) Satisfaction" - The Rolling Stones
 57. "Disco 2000" - Pulp
 58. "Everybody's Free (To Wear Sunscreen)" - Baz Luhrmann
 59. "Disco Inferno" - The Trammps
 60. "Like a Prayer" - Madonna
 61. "China in Your Hand" - T'Pau
 62. "Just Can't Get Enough" - Depeche Mode
 63. "Music Sounds Better with You" - Stardust
 64. "My Name Is" - Eminem
 65. "Shout!" - Lulu
 66. "I Feel for You" - Chaka Khan
 67. "Take a Chance on Me" - ABBA
 68. "The Power of Love" - Huey Lewis & the News
 69. "Killer" - Adamski
 70. "Bad" - Michael Jackson
 71. "Always Look on the Bright Side of Life" - Eric Idle
 72. "Tom's Diner" - Suzanne Vega
 73. "West End Girls" - Pet Shop Boys
 74. "Oh, Pretty Woman" - Roy Orbison
 75. "I Just Called to Say I Love You" - Stevie Wonder
 76. "Let's Dance" - David Bowie
 77. "All Right Now" - Free
 78. "Smells Like Teen Spirit" - Nirvana
 79. "Stayin' Alive" - Bee Gees
 80. "Israelites" - Desmond Dekker
 81. "The Power" - Snap!
 82. "The Safety Dance" - Men Without Hats
 83. "I Just Wanna Make Love to You" - Etta James
 84. "Lust for Life" - Iggy Pop
 85. "My Generation" - The Who
 86. "Take My Breath Away" - Berlin
 87. "Red Red Wine" - UB40
 88. "These Boots Are Made for Walkin'" - Nancy Sinatra
 89. "It's Not Unusual" - Tom Jones
 90. "Johnny B. Goode" - Chuck Berry
 91. "Bring It All Back" - S Club 7
 92. "A Whiter Shade of Pale" - Procol Harum
 93. "He Ain't Heavy, He's My Brother" - The Hollies
 94. "Imagine" - John Lennon
 95. "Little Fluffy Clouds" - The Orb
 96. "Total Eclipse of the Heart" - Bonnie Tyler
 97. "I'm Not in Love" - 10cc
 98. "Temptation" - Heaven 17
 99. "My Way" - Frank Sinatra
 100. "Albatross" - Fleetwood Mac
 101. "The End" - The Doors
In addition to this version, there are two shorter versions called "Intro-Expansion Part 1," and "Intro-Expansion Part 2," that essentially split the list in half but feature different arrangements and several surprises that are not part of this track.
Listen: 
Osymyso, Intro-Inspection