Internal Gravatar type service

Since arriving at my new job (excellent ta, thanks for asking) I've once again come across some internal pages that it'd be nice to associate mugshots with (thumbnail is fine) in a service just like gravatar offer. In fact, exactly like gravatar offer... then it could be used with some minimal URL re-writing and minor code changes in applications

IMHO when you have a corporate photo-id upon your person, then this should be available on the intranet - it shouldn't be *that* hard to use the same algorithm on a small webserver vhost to select a suitably sized photo (since its corporate, these can be mapped automatically to LDAP or some other identity management service) entries.

Perhaps I'll have a code, but not next week as we have new toys arriving from our vendor (rhymes with  'play') finally :-)