You've got files, and you need to get them from here to there. Maybe you need to work on the Big Project at home, but you didn't bring you laptop in today to carry it home on. Or maybe you need to share your work with a colleague in the next office—or on the other side of the world. You could attach it to an email, but big files in an email can be a no-no. You could set up an FTP server, but there's all the administrative overhead in the care and feeding of such a beast. Maybe you ought to check out TransferBIGFiles.
With no registration required, it's easy to send your files where they need to go. From their website, you just upload the file (or files) you're interested in, and enter an email address for your recipient. They'll get an email with a download link and before you know it, they've grabbed the file and you can all get on with life. There's no limit to the number of files you can transfer here, although they can't be larger that 1GB in size each. That's a pretty big file—all the data you can pack onto a CD-ROM and then some. Your file is available for at least five days after you upload it, so there's no reason why your recipient can't find a minute to grab it.
TransferBIGFiles is a free online service. It should be compatible with any computer running a modern web browser.