Design Cuts' current bundle includes some super cool elements, notably patterns.
These patterns got me thinking about OBEY-style pieces, and before I knew it, I started designing an OBEY-like poster.
All of the piece is made in Illustrator, including the texture effects. One of the strongest piece of inspiration was this old ConEd booklet about atomic energy.
I wrote a pretty detailed process post/tutorial about it, and you should go read it.