Day One On Linux: What Would You Miss?

I've decided once and for all that I'm going to make a serious effort to make Linux my primary operating system. Am I dissatisfied with Windows? No. In fact, I'm quite happy with it. It's just time for a change, that's all.
This isn't my first attempt to switch. I've made several others before with various distros: Ubuntu, Mint, PCLinuxOS, Mandriva, Fedora, Slax...There's always been something early on that made me bail out and head back to my trusty old Windows XP install.
Now, I'm not blaming Linux. It's more to do with my comfort level with the programs I have installed. Certain apps that I've been using for ages in Windows aren't available in Linux, and that's held me back. For me, it's always been Photoshop (CS2 in Wine has never worked very well for me).
Recently, however, I've been testing out so many other similar apps that I don't think I'll notice it missing this time. I'm getting comfortable with GIMP's UI, and I can always use Drpic.com for really quick edits.
Which brings me to the larger point: how much does your OS really matter any more? I use Firefox and a handful of addons and a number of web apps now, so switching ought to be relatively painless. So far, the only thing I've missed is being able to install a Windows app to review it for DownloadSquad, and VirtualBox will take care of that soon enough.
What about you? Could you switch to Linux and not miss a beat, or are there still some apps you just can't live without on your desktop?
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So, just how good at time waster games are you? Think you've got the stuff? Well, The World's Hardest Game 2.0 doesn't think you do.
Yes, amazingly, it's possible to have a sequel to a game called "The World's Hardest Game". It doesn't seem logically possible, since if the first one was actually the world's hardest, how could another one come along and share the moniker? It made me doubt the name in the first place. That is, until I tried the game.
The mechanics of the game are very simple. You are a small red square, ...
