Yeah i've seen fake emails like that, its annoying how they do that because they can fake any email they want, i've recieved spam emails from my own email account aparently, i checked the HTML etc and it was from some random email but they managed to display it as it sent from mine weirdi had one the other day asking me to comfirm my credit card details as my details needed to be updated.
the only thing that made me think was that the email address was from paypal@paypal.de
paypal have told me that this email is not theirs and if you send them your details my account will be empied automatcaly