This is much more realistic than the classic USGS texture map:
You can choose pure USGS map, pure Clementine, a USGS-Clementine blend, and whether or not to perform dynamic shading of the USGS map. The USGS map depicts a moderately low sun angle illumination for the entire surface.
Lunar Calculator provides improved realism of the USGS map because it can reverse the highlights/shadows for post full Moon time, and reduce the texture for high Sun angles away from the terminator. It's not perfect or complete, but it's a really good start.
In the example below, the prominent craters are Endymion, Atlas and Hercules:
Waxing crescent_____ Full Moon_________ Waning gibbous
The crescent view at left is the "normal" USGS view. The images are not aligned because of libration! The full Moon view is librated towards the limb.
Here's the real thing from the Consolidated Lunar Atlas:
Waxing crescent_____ Full Moon_________ Waning gibbous
With light coming from the "left", for example at third quarter, Check out the reversed lighting on the craters, the central peaks, and the bright "straight wall" (just left of center):
Contains over 7,400 features! Multi-language support. 
Floating scale marker that wraps itself on the Moon, moving with your mouse:
Navigation window shows area relative to the whole disk; 
Artificial libration to view the Moon from overhead (example Mare Orientale):
Libration graphs (can animate):
Libration search:
Looking for times when future librations match or exceed the present or past? This search highlights good matches, really good ones, and great matches. You can copy and paste the output into word processing programs while maintaining the formating.
Colongitude search:
Looking for times when the same lighting will return? The colongitude search not only gives times and dates when the colongitude is the same, but also highlights good matches, really good, and great matches with other parameters such as libration and solar latitude. You can copy and paste the output into word processing programs while maintaining the formating.
Contrast/brightness change:
Modify the contrast and brightness of the LunarCal image. You can also choose to display a fading effect near the terminator to simulate the way the brightness drops towards the terminator.
Young/Old crescent search:
Do you want to know when to look for razor thin crescents without looking month by month? The crescent search looks into the future and filters out events that do not match your search criteria (age and altitude above the horizon). You can copy and paste the output into word processing programs while maintaining the formating.
Rise/Set Alt/Az Lunar Photo Search
Many astronomers enjoy viewing or taking pictures of the crescent or full Moon sitting above an interesting landscape or foreground:
"Wire" view:
