As a consequence of YouTube introducing AudioSwap on February 22, 2007, which replaces the audio of copyrighted soundtracks with a different, Creative Commons licensed song, a number of songs from 009 Sound System became widely prominent on many YouTube videos.

Bonus Facts:

009 Sound System was so prominent from the Soundswap utility because available replacement songs were ordered alphabetically by artist name, which meant their songs were usually the first results people saw as options to replace audio.

And the song "With a Spirit," has some interesting lyrics, since the song is mostly about psychedelics and it's relation to religion, with choice bits such as

you can be whatever you want when you're high

walk slowly with a spirit by your side

...

don't think, just take a ride

don't believe, that jesus lied

to keep us all so satisfied

...

never ask, for holy rites

don't ya think, that god has died,

this time

...

and don't stop, takin' these drugs cuz'

they got u flyin' forgettin' yesterday

maybe it's crazy but keep gettin' stoned while u can

baby in the lord's hands

Not particularly risque as far as lyrics can go, but I could definitely see some religious fundamentals getting pissed off at YouTube for making music with these themes so easily accessible to kids.

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