Join 500,000+ artists on ConceptArt.Org.
Its' free and it takes less than 10 seconds!
Fairly certain it's MindCandyMan's sketchbook you're looking for.
Ah, beaten to the punch.
Some nice entries so far. Just two quick ones from me, I'm afraid.
~4 mins - charcoal in sketchbook - from memory
~45 mins - pencil in sketchbook - from mirror
S'pose this would be just about the perfect time to make a first post.
Mirror - HB mech pencil on sketching paper - 20 mins.
Notice the shamelessly copied Android-style arrow-shaped mohawk...