To be successful in the a/v world of advertising you need to have a keen sense of what people want. Can you guess what I'm about to say? Probably not. Be FUNNY! Something hilarious that has people remembering a specific tune, action or voice for days will certainly earn you recognition.
Take the Old Spice commercials for instance. The "Old Spice Man" has earned awards for how clever the commercials were that he acted in. They are extremely hilarious and the more you watch, the more you can't get it out of your head.
Even low-budget commercials can be funny. Here's an example: http://www.youtube.com/watch?v=8QjnoW4d_Io
If you aren't a witty person, no problem. Don't be afraid to ask for ideas. As always, we are here to help. :-)