What do you do "Off Line" to drive people to your website?

We all know about SEO and the importance of keywords, etc...but what are you doing to brand your website off line? Is your website listed on your business cards, invoice and letterhead? Do you include it on all PR materials and marketing? You should be. Revise those items today and drive more traffic to your site.
Also, make sure that you have a clear, concise domain name. It should match your business name almost to the letter so that it becomes synonymous with your business and easily recognized. On your website, make sure you have a short sign up form so that you can collect emails for email marketing. Don't force people to fill out a job application so that they can receive your marketing. In most instances, a simple request for their email will suffice.