As do I. It's one of the best things about Android, I've found. Going back and forth between two applications directly is very, very efficient for using a mobile OS, I've found. I think the author is wrong in saying that it appears as a "random selection" of apps. If I'm using it, it's because I remembered that I was just using another app. I'm not using it for discovery; I'm using it as a shortcut.

I use it all the time, too. It's essentially a taskbar for recently used or running apps. If I follow a link from Seesmic or Gmail, but want to keep the browser open, I <hold Home> and swap back to mail. Or maybe a song comes on that I don't feel like listening to at the moment, so I swap over and skip it in the same manner.