Plastic Russian-made medium format camera (b. 1982). Leaky, unpredictable results, great bright colors. Used for lo-fi art photography.
“Plastic fantastic!” is a nice introductory article, with illustrations.
A page of holga hacks.
Holga cameras: site with tips and info.
Fuji still makes great film available at a discount in bulk (this is Velvia RVP 100 color slide film, great for the Holga).