I have just heard Australian-English actor Rob Inglis repeatedly pronounce the word "door" so that it rhymes with "poor".
In what dialect is that pronunciation found? Is it Australian?
Edit - clarification
My "Oxford Advanced Learner's Dictionary" gives the pronunciation [dɔ:(r)] for "door" and [pʊǝ(r)] for "poor"
Mr Inglis' pronunciation is [dʊǝ], not [dɔ:].