Fallacies and Errors in Sound Reasoning

Please respond to the following:

There are several types of fallacies: equivocation, false authority, ad hominem, appeal to ignorance, and bandwagon.

Please provide two different examples of advertising that show any of these topics.
Which of these fallacies is used in each advertisement? Why do you think the advertisers used that fallacy in the ad? Did the advertisers use the fallacy effectively?
If you were an advertiser, what would you have done differently to better use the fallacy?