It's National "One Hit Wonder" Day!

Kung Fu Fighting-Carl Douglas

I'm with tooblue with Doubleshot, but I also like Hot Smoke and Sassafrass by Bubblepuppy.  96 Tears is up there, too.

Maybe someone already mentioned, She's About a Mover, Sir Douglas Quintet.

Afternoon Delight-Starland Vocal Band. An iconic song in pop culture.
Never had another Top 40 hit due to an early 70's acoustical based sound. The late 70's put a hex on many acts including The Carpenters-John Denver ect. Check out the album Rear View Mirror which includes possibly SVB's best song "Norfolk".

To add to the long list of one-hit wonders stated previously:

"Reach Out of the Darkness" - Friend and Lover
"Will You Be Staying After Sunday" - The Peppermint Rainbow
"Tracy" - The Cuff Links
"Moonlight Feels Right" - Starbuck
"Hey There, Lonely Girl" - Eddie Holman
"Shannon" - Henry Gross
"It Never Rains in California" - Albert Hammond
"Na Na Hey Hey (Kiss Him Goodbye) - Steam
"Play That Funky Music" - Wild Cherry
"Where Have You Been All My Life" - Fotomaker
"Starry Eyes" - The Records