I'm aware that these kinds of posts lower the bar, but stick with me for a sec.
If I'm feeling blue or just out of gas in general, in the past I've tried all sorts of ineffectual methods to chipper my self up. Some have been down right dangerous or illegal. =)
Watching this video gives me the right amount of stimulus I need, every time. This is the most powerful pill in my medicine cabinet. I dare you not to at least crack a little smile after watching this no matter how bad your day was.