Any document that is being sent to be edited, sure, distribute in word, but for things like resumes which are static, PDF is (at least in the business world) considered to be the polite method of distribution. Especially as there are now quite a few excelent PDF printer applications out there for public use.
Discussed this in some detail with my source in the world of General Management (mostly commercial Off Broadway, as well as some producing on Broadway and Off Broadway) and he assured me again that while G.M.'s now do use .PDF for their P/L statements, they (from his point of view) do not want resumes submitted in .PDF.
His primary point seemed to be that .PDF files take up more room (which I don't believe is always true... but there you have it.) His secondary point seemed to be that some important creatives in the field (the playwright in his most recent Off Broadway commercial venture, for example) still can't handle .PDF files while everyone can open Word documents.
Whether .PDF files are considered more "polite" in the business world is somewhat irrelevant compared to the needs of the theatrical business world. Moving from making $ in the computer/financial sector (comptroller then M.I.S. for a small Wall Street software company) in the mid-90's, it was apparent to me that in general, the computer saviness of theatre back office, especially in regionals, was well behind that of the general business world. Perhaps that has changed.
A few years ago, it appeared that I held some sort of unoffical record (in the world of the SMA postings anyway) for being hired "blind" (resume submission, references, maybe phone interview, no in-person contact) so, personally, I'm going to stick with what works until it doesn't. Anyone else out there have significant but different experience in being hired "blind"? -- I'd love to hear about it. (Especially since SMA no longer casually tracks how many people get jobs from their postings).
(As far as Off Broadway goes ... well, there are far too many stage managers out there for too few positions -- it's every man and woman for themselves
Happy hunting!