We report patterned deposition of carbon nanotube/conjugated polymer composites from solution with high nanotube densities and excellent feature resolution. Such composites are suited for use as electrodes in high-performance transistors of pentacene and C-60, with bottom-contact mobilities of >0.5 and >1 cm(2) V-1 s(-1), respectively. This represents a clear step towards development of inexpensive, high-performance all-organic circuits.