ReiseRadKarte's cycle map of northern Italy based on OSM data
Contour lines of Great Britain and Ireland
Map of the Czech Republic based on OSM data provided by raumbezug
Very nice and completely routable maps based on OSM data by Lambertus
Standard OSM map of Singapore by Computerteddy
This is a collection of nice topographic maps from Afghanistan. They feature roads, rivers, settlements, POIs and contour lines. They also provide english transliteration of the names.