Better Thematic Maps!

Yep...this does sound boring...but in-fact is one of the most useful tutorials I have yet seen about thematic mapping: Thematic Cartography Guide (as they say: short and friendly!)

Kids Map It!

This is fun and super-simple: Kids Map It

R

Well - R is great and here's a fun and informative video to tell you all about it:

Average Age in Germany

Interesting visualization, interesting patterns!

What Is Code?

This is intense (and rather long...), but an excellent introduction/overview of coding, programming languages, and data: What Is Code?

Baby Names

Better viewed full-screen: Little Waves of Baby Names

Mapping the Ocean

Here is an interesting quick video highlighting some of the issues associated with mapping an irregular 3-D object (= the Earth) in 2-D space (= on a map):

Looking for more examples? Have a look at Eight Projections or What Your Favorite Map Projection Says About You (by xkcd).