Bill D:

"Eschew Obfuscation" may go back far, but I recall it as a bumper sticker put out by a classical radio station in Waltham, Mass. in the early 70's. You could drop in on Beethoven's Birthday for cake.

They also had:

"E=mc2 +/- 1 dB"
"Handel With Care"
"Oberon Was A Fairy"
"Bach Is Beautiful"

and my favorite:

"Soothe A Savage Breast Today"