Soderbergh (Sex, Lies & Videotape; Erin Brockovitch; Oceans 11, 12 & 13; Out of Sight; Side Effects) has announced his retirement from big-screen/cinematic film making (although he is, interestingly, writing, directing and producing for television) has also turned to Twitter as a medium that offers him room for artistic expression, beyond--or different from--the ones he has employed in the past.
Like everything Soderbergh does: intriguing. And ultra cool.
http://www.nytimes.com/2013/05/02/books/soderbergh-explores-a-new-medium.html?pagewanted=all&_r=0