Not fun, but cool. Couldnt be bothered to make a new topic for it.
Photo's that were made through a microscope for a competition from Nikon. Awesome!
http://www.nikonsmallworld.com/leaderboardJust a few that I like (many more on website above!):
Yanping Wang, Beijing, China
snowflake
Pekka Honkakoski, Iisalmi, Finland
Rare column snowflake with thin, knifelike ice extensions
Dr. David Maitland, Feltwell, UK
Double compound eyes of male Bibio marci. Larger.
Dr. David Maitland, Feltwell, UK
Eutrombidium rostratus (velvet mite)
Gabriel Luna, Santa Barbara, California, USA
Retinal flatmount of mouse nerve fiber layer
Dr. Igor Siwanowicz, Martinsried, Germany
Eyes of a Jumping Spider (Salticus scenicus)
Philip Hens, Linköping, Sweden
As grown surface of a silicon carbide single crystal
Marek Mis, Suwalki, Poland
Spirogyra sp. (green algae) filaments
Dr. Havi Sarfaty, Ramat-Gan, Israel
Mouth of common fly