As long as you know their user id you can view their photos! Don't know how long this Hack will go before they stop it, so check it while you can.
tagged photos added by others: http://www.facebook.com/photo.php?pid=12345678&op =1&view=all&subj=MEMBERID&id=MEMBERID
tagged photos added by themselves: http://www.facebook.com/photo.php?pid=13245678&op =1&view=user&subj=MEMBERID&id=MEMBERID
ex: Mark Zuckerberg’s member id is 4 so let's see his pictures...
http://www.facebook.com/photo.php?pid=12345678&op =1&view=all&subj=4&id=4