Useful sites with maps on them ...
- Multimap (useful for OS maps
- Get-a-map (OS map site for buying maps BUT good for checking 6-figure grid refs.)
- Earthquake map (USGS Live map of quakes around the world)
- World Atlas (A nice simple interactive world atlas)
- Google Maps
- MS Local Live View
- GeoPortail (France) (French version of Google Maps but you can add and fade in/out layers too!)
Don't forget that you can capture a screen picture and then PASTE it into your document ...