Jay Foreman and Mark Cooper-Jones, an English comedian with an interest in geography and a former geography teacher who's also very funny, are the Map Men ("...Map Men, Map Map Map Men Men" ), whose highly entertaining YouTube channel is chock full of educational cartographic goodness. Try any of their (27) videos at random, or all of them—even the ads are worth watching. Their recent episodes on undersea internet cables and country codes wouldn't be a bad place to start for the extremely online.

And when you're done with those, there's Jay Foreman's 15 episodes of Unfinished London and 8 episodes of Politics Unboringed (for UK definitions of "unboringed"). Hours of fun! (N.B. Approximately 6 hours and 36 minutes of fun.)