Last Minute Interview Tips

I have a job interview coming up.  I’ve read all the handouts on your website, I’ve practiced questions with my roommate, and I’ve researched the company.  And I have a professional business suit.  Any other last minute tips?

When should Spring graduates start applying for jobs?

Is it too early to start looking for a full-time job now if I graduate in May?  I’d really like to get started!