NASA World Wind version 1.3.3 (October 2005) now has the ability to browse Clementine moon data with full 3D terrain.
Three data sets are available; Clementine 40xx, Clementine 30xx, and the Shaded Relief map provided by the USGS. All three provide enough detail to see craters within craters. For more information regarding the Clementine mission see (link)
The Clementine moon data is made possible with by a partnership between Frank Kuehnel of RIACS and the World Wind development group.