A national education program being carried out right now on the International Space Station involves watching the behavior or animals and insects in microgravity. This video is of Esmerelda, a golden silk orb-weaver spider (Nephila clavipes), weaving a web in her new low-gravity home. Typically, an orb-weaver will spin an asymmetrical web, but researchers have noticed that those spun by the two spiders on the ISS are becoming more circular. In addition, the spiders no longer sit at the tops of their webs facing downwards, and are instead hanging out in all sorts of positions to look out for their captured prey--something that doesn't happen here on Earth.
Read more about the experiment and the oddities in Esmeralda's behavior on New Scientist. Link