Hey Eric,
Although there are some amazing partners listed in Marketo's launchpoint community who can surely help you create a responsive email, I'd like to introduce you to Knak. Knak is a brand new solution that we launched at the Marketo Summit, that allows Marketers who have no coding experience, to create a best in class email template, in 5 minutes, for a fraction of the cost of the 'old way'.
I am the founder of Revenue Pulse, a Marketo Services consulting firm. We used to do a ton of custom responsive templates for clients like Amdocs and Trend Micro. Although it was a good revenue stream for us, we found we were doing the same things over and over again, and could really improve the process.
With Knak, there doesn't need to be a middle man between you and the responsive template you've always wanted. All you need to do is go to
www.knak.io and enter your email address to get started. You can customize your template with your company colors, logo, font and social links, all with no coding.
Best part, build your first template for free, to see it for yourself. Once you have, let me know what you think. I'd love your feedback.