I don't remember much from those two econ classes from my earlier college years but one thing I do recall is the concept of marginal utility (probably because Jeff, Greg and I were always making jokes about it). Marginal utility says that when you consume one unit of a particular good or service, satisfaction will decrease from consuming additional units. Take this bag of gummi bears I've been snacking on. The first few I ate were great. The next few, not so much. And so on, till I'm left with half a bag of gummi bears. However, I've found that marginal utility doesn't apply to everything. Using running as another example, the more miles I run, the more I tend to enjoy it.
With the band Sigur Ros, their utility increases with "consumption." Having said that I proudly post these two videos on my blog, "Glósóli" and "Hoppipolla". Maybe you've already seen them; all the more reason to try this marginal utility thing out. For those who haven't seen them, if you're not left with a smile on your face after watching both, then I wouldn't go stand next to any large magnets because you're probably a robot.
The combined length of both videos is about 11 minutes; in other words, 11 of the best spent minutes of your day.
(I tried posting them in the blog itself but apparently they won't let you. Psh.)