I totally agree with this. I'm part way through 'the 4 hour work week' by Tim Ferris. He's a bit off the deep end with things he says, but the general message he puts out is really good: Why would you slug 8 hours getting hardly anything done because you're so bored/unmotivated when you can walk in at 12 and get more done in a few hours than you would usually?

Sadly, most employers see Time = Money. The fact is that that isn't the case at all when people are working 9-5 5 days a week.