Wow, another arbitrary interview technique of dubious worth. Yay...

"Are you ready to be CEO of Google on Monday?" If they say yes, then I'll probably entertain myself by asking how they'd run the company while mentally moving on to the next candidate."

Why does a young candidate believing he can be CEO of google mean he can't work for you as a javascript developer? How do already know how good this candidate is at business? After all, google was founded by 20 year olds with 0 business experience. Some would argue it went wrong when suited business people took so much control over it (6 adds on a search result today).

Ultimately though, my larger point is that what objective evidence is there that this technique is any better than a coin flip? If none, why are you telling us?