I have. I personaly put all nationaly or international recognised qualifications on my CV. It also strengthens your "hobbies and about me" section of your CV.
PPL on your CV demonstrates your ability of confidence, indapendance, trustworthyness, thouroughness and dedication.
I will imagine you will get 2 types of response to this question.
1) along the lines of my response
2) Nay sayers and the "do you wear wings and epaluetts when flying" brigade.