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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With Halloween fast approaching, it's a great time to get in some practice defending your territory against zombies. In Graveyard Shift, you take aim at zombies and other creepy-crawlies, blasting them into splatters of cartoony green guts. It's a casual first-person shooter, and it's very easy to get the hang of - use the mouse to aim, click to fire. Graveyard Shift has at least 15 levels, and it might even have some secret stages I haven't unlocked yet.
They key to getting good at Graveyard Shift is learning to use ...
