The International Institute for Species Exploration at Arizona State University that has just come out with the top 10 new species of 2012! This is the 5th year they have come out with such a list. If you would like to nominate your favorite new species discovered in 2013, click here.
Here are my favorites from the 2012 list:
The snub nose monkey (Rhinopithecus strykeri) from Myanmar that sneezes when it rains: