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geeky 
As BBC reports on this article in Science published by a bunch of crazy IBM researchers from Zurich, atomic force microscopes can be tuned so insanely well now that even C-H bonds become (kinda) visible! (the molecule on the picture is pentacene)
(The first picture is from IBM press release, the second picture is taken (and greatly reduced in size) from Science 325, 1110 (2009), without permission)