Yeah, I think Windows Live Skydrive is good: 25 GB free.
http://skydrive.live.com
Be careful of using Skydrive, at least for the immediate future.
I looked into it extensively, and even posted a thread on their forum - wanted to be sure I could access my files (PDF, Excel, Word) and e-mail them in future, as attachments.
This can be done in Gmail Docs. - in Skydrive you can only e-mail the link to your document/attachment, which when clicked on, will invariably open a tab / new page on IE or user's OS.
I didn't want that, so have shelved the idea for now - i.e. not using Skydrive, even though you can store 25Gig's vs. Gmails 1Gig for docs. Skydrive have sent my query to some dept. for review, or something to that effect, but wouldn't confirm IF it would even be implemented.
ADrive also allow for lots of storage space, but I've looked at that, and same story as Skydrive, so my advice is Gmail, and open multiple a/c's if you run out of space.