Windows Live Mesh
If you use more than one computer, as most people do nowadays, wouldn't it be great to have access to the same documents, MP3s, photos, and other files on all of them? That's the idea behind Windows Live Mesh 2011 (the direct descendant of Windows Live Sync), which automatically keeps all your stuff synchronized between two or more PCs.
Windows Live Mesh is a set-it-and-forget-it solution, meaning that after you install the software on your PCs, sign into your Windows Live account, and choose the folder(s) you want to sync, you're done. It works in the background, copying files back and forth when your machines are online. You also have the option of syncing selected folders to your Windows Live SkyDrive, which allots 5GB of free storage and lets you access your data online instead of just on your chosen PCs.
In addition to files and folders, Mesh can sync your Internet Explorer favorites and Microsoft Office styles, templates, e-mail signatures, and other settings. It even lets you remotely connect to other computers that are part of your little "Mesh-work."