The International Institute for Species Exploration at Arizona State University and a committee of scientists from around the world recently announced their picks for the top 10 new species discovered in 2011.
See the full list here.
My favorites are:
Sneezing monkey (Rhinopithecus strykeri)
Parasitic wasp (Kollasmosoma sentum)
Sazima's Tarantula (Pterinopelma sazimai)
1. Thomas Geissmann/Fauna & Flora International
2. C. van Achterberg
3. Rogério Bertani/ Instituto Butantan