Here are four recent WordPress sites – not including the one you’re on now – that use a variety of visual, programming, and plugin customizations to address specific sets of needs. Bonus: some soapboxing about how great WordPress is.
Portfolio

HTML5
While not the content-focused, power-to-the-people system that is WordPress, if you’re up for some coding, HTML5 allows for great flexibility in technology and creativity when it comes to building websites. Here are some examples of what I’ve been building recently.

Copywriting
Here are two examples of brochures on which I provided both copywriting (the content) and some design support. MoreThanData (Click image to view full brochure) Lessons With Ease (Click image to view full brochure)

Technical Writing
What does 200,000 words of comprehensive reference help and user how-tos for a software package look like? See what took me and a small team years to develop and write.

jQuery/JavaScript
Sometimes people think programming is about writing tens of thousands of lines of code to produce some enormous piece of software. In fact, the best programming is often about writing something much smaller that serves a specific purpose.

Single-Page Applications
Single-Page Applications (SPAs) are programs that allow you to interact with a page and do a specific set of tasks without ever leaving the page itself. They can range from simple to complex, practical to fun.