According to recently released Journal Citation Reports statistics, the 2010 impact factor for SLEEP is 5.486, which places it at the upper 5.12 percentile of all scientific journals. For the first time in the journal’s history, the five-year impact factor for SLEEP rose above 6.0 to 6.116. SLEEP also leads all other “sleep” journals in impact factor, five-year impact factor, number of citations, Eigenfactor score, and article influence score. The impact factor of SLEEP has continuously risen over the past decade; in 1998 the impact factor was 1.880 and in 2000 it was 3.168. The continued excellence of SLEEP is a testament to the high standards of the journal, which is the authoritative source for research on sleep and sleep disorders. All AASM members are welcomed and encouraged to submit their original sleep science for consideration. Please visit the SLEEP website for details.