(TED is on its annual two-week vacation. During the break, we’re posting playlists from the TEDTalks archive. We’ll be back with new talks on August 29th.)

To propel us into the week: four speakers whose infectious high energy animates what they have to say.

1) Clifford Stoll captivates his audience with a wildly energetic sprinkling of anecdotes, observations, asides — and even a science experiment. After all, by his own definition, he’s a scientist: “Once I do something, I want to do something else.”

[ted id=237]

2) You’ve never seen data presented like this. With the drama and urgency of a sportscaster, statistics guru Hans Rosling debunks myths about the so-called “developing world.”

[ted id=92]

3) In a presentation that can only be described as epic, comedian Charles Fleischer delivers a hysterical send-up of a time-honored TED theme: the map. Geometry, numbers, charts and stamp art also factor in (somehow), as he weaves together a unique theory of everything called “Moleeds.”

[ted id=738]

4) Here’s a crazy idea: Persuade the world to try living in peace for just one day, every September 21. In this energetic, honest talk, Jeremy Gilley tells the story of how this crazy idea became real — real enough to help millions of kids in war-torn regions.

[ted id=1209]

Playlist by Emily McManus.