Gregor Blanco has just 27 stolen bases in some 271 career games, so we wouldn't say that he's necessarily known for his speed on the basepaths.

However, when you're trying to take an extra base on a routine outfield single and you fall flat on your face in front of 41,000 people, it's amazing how much faster you get. (And really, what is it about the AT&T Park dirt? This is getting serious.)