Open GPS Tracker

An application that can track your travels of your Android by storing your GPS locations. Draws the route real-time on either Google or OSM maps. Uses coloring to render speeds. Share though GPX, KMZ formats or summarize with a tweet. Take notes on your track with pictures, video, audio and text.

http://twitter.com/rcgroot

For a demo on using Breadcrumbs integration:
http://app.gobreadcrumbs.com/getting-started-android.html

For help on preparing off-line maps checkout:
http://code.google.com/p/open-gpstracker/wiki/OfflineMaps