Simon's writing credit was added to the theme song to the American children's TV show H.R. Pufnstuf after The Kroffts were successfully sued by Simon, who claimed that the theme ripped off this song.
A popular cover version from 1967 was recorded by Harpers Bizarre, reaching #13 on the Billboard Hot 100. Their version featured a harmonic choral a cappella section and a wind quartet with a flute, oboe, clarinet and a bassoon.
Tori Amos performed the song at several of her concerts in 2005.
The Grateful Dead were known to have sampled portions of the song in their music. The most notable instance was within the performance of "Dark Star" on 13 February 1970 at the Fillmore East in New York, NY on the Dick's Picks Volume 4 album.[verification needed]
The song was used in an episode of The Simpsons, [Season 6, Episode 25] called "Who Shot Mr. Burns? (Part One)". Mr. Burns alludes to the song, saying, "Hello lamppost, whatcha knowin'? I've come to watch your power flowin'."
The song was used in the trailer for Hal Ashby's 1975 comedy-drama Shampoo for which Paul Simon composed the original score.