I love this quote from a recent article by Chris Bowler:
The enjoyment I get from my Mac is in part due to the operating system – the ease of use, the intuitiveness and the look of OS X all add to the experience. But my enjoyment is enhanced greatly by the third party software that I use every day. At any time, one look at my dock shows that applications created by Apple are always outnumbered by those I have purchased from the Mac developer community. Applications such as NetNewsWire, Coda, Yojimbo and Things make the hours fly by.
And off topic a bit, but am I the only person left not using Yojimbo?