I'm not sure if this has been posted before, but I thought this was quite interesting.
With this you can make any kind of address, (Hatashi@Hatashi.com, really.. just anything, as long as it doesn't exceed the character limit and doesn't contain invalid characters).
Though, you won't have a inbox, you can only use this on MSN.
All you need to do is sign-up here.
Just enter anything in the ''E-mail address:'' dialog and you are good to go.
I don't think a image should be needed, but heck, here it is.
But, there is one problem, I can't seem to verify it, since it doesn't have a inbox, any ideas for this?