"The Art of Clean Up" is where OCD stands for Obsessive Compulsive Design. (More examples in the "bildergalerie" here) From neat-freak Ursus Wehrli who previously gave us "Tidying Up Art".
posted by oneswellfoop on Aug 28, 2011 - 17 comments

During his downtime on early worldwide tours with DEVO, Mark Mothersbaugh began illustrating on postcards to send to his friends, which he still creates, and has been creating every day for over 30 years. It's an obsessive habit/hobby which still yields anywhere from one to a couple dozen new postcard-sized images per day.
posted by furtive on Sep 3, 2006 - 11 comments

The Adaption to my Generation - daily portraits of Jonathan Keller...from 1998 to the present (as he states, "The project will continue until the day I die. Only then will it be complete, and worth its true value."). Also of note...his links page, which includes links to other "passage of time" (like the Portrait of Louise Anna Kubelka from birth to adulthood and Nicholas Nixon's "25 Years of the Brown Sisters") and "obsessive" (like Eat22 and 365 Plrds) photo projects...via Information Aesthetics.
posted by tpl1212 on Jan 26, 2006 - 14 comments

Fantastically obsessive & detailed recreation of Bag End (Bilbo's home from The Hobbit) in dollhouse scale. Pictures from the start of the project here.
posted by jonson on Jan 15, 2006 - 14 comments