Weidon Wang developed an effective method for purification of the mSWI/SNF or BAF complex and with his wife Xutong, cloned nearly all of its components. With Keji Zhao, Weidong found that it contained an actin like gene and also b actin. Weidong was the first to show that mammalian chromatin remodeling complexes are combinatorially assembled. This discovery greatly expanded the regulatory potential of these complexes which were considered to be monomorphic prior to Weidongs work. Weidong was the second person to receive the Presidents Award from our lab and is presently a Senior Investigator at the Laboratory of Genetics, NIA, NIH. He can be reached at wangw@webmail.grc.nia.nih.gov or at his web page.