Map.Primorye.Ru is a map collection site with tons maps. Interactive maps which can be zommed in and out of the world and more (recommend Internet Explorer), thematic maps like military and ethnic groups, tons of maps of Russia and the other former Soviet states, and then over 4,000 maps of the world and countries.
The feature I like to most are the interactive maps. Not only can they be zoomed in but they also have layering options found usually only in GIS-based programs. Not to meantion the ability to measure distance and more! (Hat Tip: Great Maps)