I'm always impressed by artists who can just sit down and draw a smooth, consistent pattern or texture as if they see it clearly before them and are just tracing over it.
I just discovered the beautiful work of Luke Ramsey. His stuff has a great range to it, from graphic semi-cubist stuff, to more sketchy street-art.
Ramsey's work reminded me of Theo Ellsworth, a sequential artist with a similar feel to his lines. Theo's compilation of Capacity comics was of the most wonderful indie comics I'd had the pleasure to read in years. I just found his new comic Sleeper Car and was very happy to be allowed back into his intricate, touching and kooky world yet again.