I would have thought that an example would be the PDSA advert, which is very sentimental. It high-lights common insecurities that people have, eg. living alone, dieting etc. It's highly emotive. As to its effectiveness, I'm not sure, personally i find it over the top, and I love pets!
Oh god, the NSPCC advert with the background song - This Womens Work by Kate Bush. Its harrowing. First time I seen it I phoned up and donated �5 a month. I haven't even noticed those fivers going which goes to show that we could all afford a few pounds a month to a charity.
The anti smoking ad with the old man in a hospital bed talking with a husky voice suffering from throat cancer asking his kids to make him a promise"promise me you will never smoke"he says
it certainly me me stop and haven't had a ciggy for 2 years now