"The Wacky Top 40", by Bruce Nash & Allan Zullo (published 1993):

40. Tie A Yellow Ribbon Round The Ole Oak Tree; Dawn (1973)
39. Afternoon Delight; Starland Vocal Band (1976)
38. Shannon; Henry Gross (1976)
37. Timthy; The Buoys (1971)
36. Paradise By The Dashboard Light; Meat Loaf (1978)
35. More, More, More; Andrea True (1976)
34. Escape (Pina Colada Song); Rupert Holmes (1979)
33. Witch Doctor; David Seville (1958)
32. Wooly Bully; Sam the Sham & the Pharaohs (1965)
31. Monster Mash; Bobby "Boris" Pickett (1962)
30. I'm Henry VIII, I Am; Herman's Hermits (1965)
29. Kookie, Kookie (Lend Me Your Comb); Ed Byrnes & Connie Stevens (1959)
28. Yakety Yak; The Coasters (1958)
27. Chug-A Lub; Roger Miller (1964)
26. Eat It; Weird Al Yankovic (1986)
25. YMCA; Village People (1978)
24. Sugar, Sugar; The Archies (1969)
23. Playground In My Mind; Clint Homes (1972)
22. Bohemian Rhapsody; Queeen (1975)
21. Junk Food Junkie; Larry Groce (1976)
20. The Homecoming Queen's Got A Gun; Julie Brown (1984)
19. Mr. Custer; Larry Verne (1960)
18. Surfin' Bird; The Trashmen (1964)
17. Convoy; C.W. McCall (1975)
16. Alley Oop; The Hollywood Argyles (1960)
15. Tie Me Kangaroo Down, Sport; Rolf Harris (1963)
14. Louie Louie; The Kingsmen (1963)
13. Shaddap You Face; Joe Dolce (1981)
12. Itsy Bitsy Teenie Weenie Yellow Polka Dot Bikini; Brian Hyland (1960)
11. Billy, Don't Be A Hero; Bo Donaldson & the Heywoods (1974)
10. Short People; Randy Newman (1977)
09. The Purple People Eater; Sheb Wooley (1958)
08. Telephone Man; Meri Wilson (1977)
07. (You're) Having My Baby; Paul Anka (1975)
06. Pac-Man Fever; Jerry Buckner & Gary Garcia (1982)
05. You Know My Name (Look Up The Number); Beatles (1970)
04. Disco Duck; Rick Dees (1976)
03. MacArthur Park; Richard Harris (1968)
02. Yummy, Yummy, Yummy; Ohio Express (1968)
01. They're Coming To Take Me Away, Ha-Haaa!; Napoleon XIV (1966)