I'm not sure if you are searching for a current commercial or an original commercial. Commercials these days are so masterfully written to apply to all possible modes of persuasion (Aristotle). A great example that is currently on TV is the "Five Hour Energy" commercial featuring a sleepy guy at his desk. Here's why it's so effective:
Ethos: Appeal to credibility/ a reliable source of information. The smart-looking woman in the opposite desk has taken five hour energy drink and feels refreshed and energetic. She comes off looking credible and trustworthy. The advertisers use her to contrast the sluggish man that most viewers would identify with.
Pathos: Appeal to emotion. Who hasn't felt sleepy on the job? The sluggish desk guy is the quintessential 'every man.' We can all identify with wishing we had more energy.
Logos: Appeal to logic. The commercial says over five million people choose "Five hour energy" over nine times a week. The statistics support that five hour energy works for millions of people...it could work for you too!
Even though this energy drink may be all 'washed up,' the commercial is savvy and has a lot of great content. I included a link below, so you could view the commercial AND a link about Aristotle's modes of persuasion.