The interview questions aren't very hard. Most questions are situational questions that have to do with customer service. Keep in mind these questions were for a merchandiser position.
The following examples I could remember: (paraphrased)
"Why do you want to work at Pepsi?"
"Tell me about yourself (and work experience)."
"Tell me about a time where you had a negative experience with a customer and turned it into a positive one."
"Tell me about a time in your life where you had to learn a new skill and what did you accomplish with that."
Good luck to everyone. Competing with the large number of applicants is almost always going to be what determines if you get a job or not.