WeTransfer is a free service that allows you to send big files to someone, easily and for free. You simply add the files you want to send (up to 2GB), enter the email of the person you are sending the files to, your email address, and click "transfer." You can even add a message for the recipient.
There is no registration, and your files are available for 2 weeks.
Sometimes files are to big to email (due to email system restrictions) and this is a great way to send them.
Related:
Uploading it -upload, sync, and share files.
Sendoid - share big files easily
JustBeamIt file sharing service
Gett - http://educationaltechnologyguy.blogspot.com/2010/12/gett-gett-free-service-to-share-files.html
FileStork - http://educationaltechnologyguy.blogspot.com/2011/07/filestork-request-files-from-anyone.html
Fyles - http://educationaltechnologyguy.blogspot.com/2011/05/fyels-free-easy-simple-file-sharing.html
AVG LiveKive - http://educationaltechnologyguy.blogspot.com/2011/04/avg-launches-file-sync-backup-and-share.html
minus - http://educationaltechnologyguy.blogspot.com/2011/03/minus-file-sharing-service.html
AirDropper - http://educationaltechnologyguy.blogspot.com/2010/12/airdropper-request-file-from-anyone.html
DROPitTOme - http://educationaltechnologyguy.blogspot.com/2010/11/dropittome-receive-files-to-your-inbox.html
Gett - http://educationaltechnologyguy.blogspot.com/2010/12/gett-gett-free-service-to-share-files.html
FileStork - http://educationaltechnologyguy.blogspot.com/2011/07/filestork-request-files-from-anyone.html
Fyles - http://educationaltechnologyguy.blogspot.com/2011/05/fyels-free-easy-simple-file-sharing.html
AVG LiveKive - http://educationaltechnologyguy.blogspot.com/2011/04/avg-launches-file-sync-backup-and-share.html
minus - http://educationaltechnologyguy.blogspot.com/2011/03/minus-file-sharing-service.html
AirDropper - http://educationaltechnologyguy.blogspot.com/2010/12/airdropper-request-file-from-anyone.html
DROPitTOme - http://educationaltechnologyguy.blogspot.com/2010/11/dropittome-receive-files-to-your-inbox.html