Some of you more nervous folk are going to love this: sometimes editors don't mind if you conduct interviews via email or phone. You may not have to go face to face!
However, it's important to realize you lose a lot of character in a phone or email interview, and, whenever possible, a writer should try to meet with the subject.
When it's time to ask for the interview, give your subject some options regarding the where and the how (unless, for example, they're halfway across the world). This is because different mediums work differently for each person. For example, in an email interview, you're putting a lot of onus for the work on your subject- making them do much of your work, in fact! Sure, some busy execs might love the flexibility of email, but others will be put off by this.
Even if you do decide to conduct a phone or in person interview, email is a good initial way to set up your schedule.
