I don't know about you but there are some applications that make me want to have an Mac OS X based machine.
This time I was reading a post "Thoughts on Flock" on Sam Aaron's blog. Flock integrates del.icio.us features with a web browser.
On the same blog in a previous post I saw a screenshot of Coverflow.
Just imagine, browsing your music collection visually! The first thought was WOW I want this too. Obvious the second thought, where can I get it. Followed by disillusion when I found out that it doesn't run on my machine 
.
Despite the disappointment still a great application, for those of you who have a Mac: I envy you, go get it!