hey! ( dont include that lol )
I tend to remember the most 'catchy' commercial. The ones that may have a unique rhythm or beat that stays in your head for a long period of time. I always seem to remember cereal brands cause they always have same type of rhythm in the clip. For example the "O'Riley Auto Parts" commercial i spend days at a time just singing the outro to the commercial. Sometimes even Movie trailers it really just depends.
I hope this helps you in some way.
Have a great day/night !