Jam harder like a Magikist
Rock harder like a Magikist

The Magikist sign in Chicago is actually semi-famous (as old signs in Chicago go). This is probably due to repeated mention of the word in Wesley Willis tracks such as "Eazy-E", "Rick Sims" and "Stabbing Westward". Currently the name is being used by a Canadian manufacturer of high pressure cleaning equipment for industry, agriculture and car washes. However today's Magikist isn't the one responsible for erecting the lip-shaped sign in ChiTown.

TT: Wesley, what's a "Magikist"?

WW: It's a carpet cleaner!

TT: Is it?

WW: Damn!

In days gone by there were apparently three Magikist signs guarding the three incoming Chicago expressways however now only one remains (on the Kennedy near Montrose).

The Tartan, "Wesley Willis discusses his career, demons" - http://www.thetartan.org/95/8/entertainment/268.asp
Roadside Art Online: Signs - http://www.interestingideas.com/roadside/artsign6.htm
Magikist - http://www.magikist.com