What can I do for you?

Employers really don't want a straight answer to this question. They know you want a job. Suggested responses, therefore, should tell employers they gain something by employing you. Answers such as, "Actually, I'm here to offer you something—loyal and efficient work", or ,"I think the question is what I can do for you. I'm here to talk about your need for an expert driver", are good.

Why don't you tell me something about yourself?

Be prepared to talk about your unique qualities. Wind up with something that relates to the job. An example: "I'm a native of Jones County, raised here and educated at Jones Community College. I have a large number of friends who are loyal to me because I get along with almost any type of person. I've met many of my friends while working as a volunteer in the Habitat for Humanity effort in my community, and my experiences there are among the reasons I'd be an excellent construction worker for your company, Mr. (or Ms.) Builder."

What kind of work are you looking for?

Be as specific as you can with this particular employer. The best answer to this question will be found in the job description you obtained prior to the job interview. (You can repeat the duties listed for the position for which you're interviewing.) Other answers that suggest you want to grow and learn or want to demonstrate your good work ethic would be "I want a job in which I'll be able to produce for the company and grow along with it", or, "I want a job where showing up on time and working hard is compensated by a fair wage."

What do you do best?

This question demands that you praise yourself—something a lot of us are uncomfortable doing. As you prepare for the job interview, think through some of your recent successes you can use to give a good answer to this question. It's best if they relate to ways you improved the current business, generated new business, or saved the company money.

Where do you see yourself in five years?

This is the great-granddaddy of goofy questions, and I give you permission, if you have any misgivings about a job opportunity, to walk out the door when you hear it. It's such a time-waster that only the most hidebound interviewers will utter it, but it lives on.
Here's why it's dumb. No company will guarantee you a job for five years, much less a career path. To construct such a plan for yourself, you'd have to make predictions about industries, companies, and your likes and dislikes that could only serve to constrain your choices. And in any case, why is it so all-fired important to have a dang career plan in mind? Every successful entrepreneur and many top corporate people will tell you their key to success: I did what I felt driven to do at the moment.
So when you get asked this question, you can say: "I intend to be happy and productive five years from now, working at a job I love in a company that values my talents" and leave it at that. Or you can give the expected answer and say: "I hope to be three levels up the ladder, here at Happy Corp." Or you can say: "I hope to own this company," just to shake things up.
But for an interviewer to ask the question at all is a bad sign. Come on, people! There are millions of thoughts in the human brain. Can we change the ones we use in job interviews every decade or so?