A busy weekend, as no doubt they are bound to be for the coming months. So I'll link to two clips I suggest you watch.
Both are from TED. First is Brian Cox, astronomer, explaining what will go on in the Large Hadron Collider (link from Bad Astonomy Blog). The other is Jill Bolte Taylor, talking about how it felt when her brain went wild (link from O'Reilly Radar).