A wonderful image of pollen from sunflower, morning glory, hollyhock, lily, primrose, and castor bean plants (Dartmouth Electron Microscope Facility 2011, colourised by William Crochot).
Image of a strawberry by Annie Cavanagh and David McCarthy of the School of Pharmacy, University of London. This beautifully detailed image was created in 2010 by stitching several different SEM images together. I have mentioned this image before. It comes via via Wellcome Images, and more of the story is here.
A human human T-lymphocyte (white blood cell), colourised blue (NIAID 2010).