Contacting journal editor asking for final decision after all reviews were submitted weeks ago? Should I email the editor of a journal to ask for a final decision on an article when I know that all reviewers' comments were submitted weeks ago? The online article submission interface shows me that all reviewers' comments are submitted.

I'm applying for jobs in a few weeks, and I'd like to be able to add an R&amp;R to my CV if possible. 

If writing to the editor is appropriate, what can I say?
Make sure you wait at least 3-4 weeks if you do choose to write, so you're sure the Editor is not planning to ask another referee (this can happen if your paper has both positive and negative reviews). 

Be polite; asking for a "final decision" sounds too blunt, and is best avoided. 
Also, there is no need to remind the Editor that the reviews are done, they know that already. Something along the lines of "I would be grateful for any updates on the status of my submission" should be adequate.