I thought graffiti/street art was an interesting way of looking at typography as an art form/imagery.

The following work is by Californian artist Armo. His work is a collaboration of typographic elements and the exploration of graffiti form and structure. He studies the visual commonalities between graffiti and typography as lettering.

Armo tries to blur the line between typography and grafitti by "striving" to find relationships between the two forms of communication.

Other examples:

Italian graffiti artist Peeta, is a member of the EAD crew in Padova, Italy and FX and RWK crew in NYC.

In this canvas piece, he visualises the letterforms dimensionally that goes beyond the canvas into a sculpture.

Other examples of typography as art form/imagery:

The following is a sculpture, Nomade which is a 26 foot tall figurative sculpture constructed of capital letters.

Change the thought and the feeling must go, WordPress, viewed 26 Sept 2009, http://images.google.com.au/imgres?imgurl=http://www.changethethought.com/wp-content/peeta.jpg&imgrefurl=http://www.changethethought.com/tag/peeta/&usg=__ZZUJ-MNN-6Cs0iyTAtO3CFQn

Armegedon 2057, SprayGraphic, A community for creative minds, viewed 26 Sept 2009, http://images.google.com/imgresimgurl=http://www.spraygraphic.com/storage2/member_files/3500/picture/600_b42153c3a3473184041d2042a6d16cde.jpg&imgrefurl=http://www.spraygraphic.com/ViewProject/4818/normal.html&usg=__8B3LcdwAL75RrjU6ACJBPVntZaQ=&h=307&w=600&sz=204&hl=en&start=3&tbnid=SRVm314mMTdB2M:&tbnh=69&tbnw=135&prev=/images%3Fq%3Dgraffiti%2Band%2Btypography%26gbv%3D2%26hl%3Den%26sa%3DXYBU=&h=406&w=545&sz=39&hl=en&start=99&sig2=G6ilii8Qa7wLOOJtzOTU3A&tbnid=vsP7zrAOGHrseM:&tbnh=99&tbnw=133&prev=/images%3Fq%3Dtypography%2Bsculpture%2Bart%2Bgraffiti%26gbv%3D2%26ndsp%3D20%26hl%3Den%26sa%3DN%26start%3D80&ei=YAO-Sue1LpDwsQPbxY14