Eureka Tower Carpark in Melbourne has an amazing use of typography for their wayfinding system. Considering people are always finding it hard to find their way around Urbis something like this might just be the imaginative and creative answer. Big respect to designer Axel Peemoeller for coming up with it.
I found this while I was browsing flickr.
Best "T" applied 
"He may have created the graffiti “T” on Page 223, but the artist Stephen Powers, better known as Espo, isn’t getting a big head about it. “I was the natural choice,” he says, “after they ran through all the other natural choices.” For his design, tagged on a friend’s truck, Powers called upon 20 years of experience beginning in Philadelphia, where both he and graffiti were born. He moved to New York in 1994 and most recently created public art through Creative Time’s Dreamland Artist Club at Coney Island (center). He also turned his work into the 2005 book “First and Fifteenth: Pop Art Short Stories” (Random House; far left). If Powers had to pick his all-time favorite tag, it would be “SP was not here,” which he carved in the back of his nanny’s Buick when he was 7. “I didn’t realize how stupid it was until one second after I’d done it,” he says. He was caught immediately. The punishment, he says, was “mental torture for at least a week.” Note to nannies: art is not a crime."
