Following on from the successful graphic novel adaptation of Fahrenheit 451, new graphic adaptations of Bradbury's The Martian Chronicles and Something Wicked This Way Comes have been announced.
Chronicles is drawn by Dennis Calero. Something Wicked is drawn by Ron Wimberly. Both books are due out in May 2011 and are already available for pre-ordering from Amazon: MC here and SWTWC here.
There is more information at ICV2.