DropBox
Well DropBox is pretty legit, I like it a lot. I have been using it a lot and I suggest you try it out 🙂 It is very useful for sending files back and forth from work. I have been using it to send sermons home and announcements to church. It is pretty great. Give it a try, you will get 2 GB for free and if you complete their tutorial you will get an extra 250 MB.
Sign up with my link and we’ll both get another extra 250 MB.
Their iPhone/iPod app is pretty legit too, check it out!