Price: Free (Cloud hosting, 12 Projects, 3 Pages, 100MB Storage, Edit CSS, 5 Membership Invites); $66/year or $9/month (Unlimited projects and pages, unlimited bandwidth, Advanced editing, All templates)
HTML knowledge needed: Little

Cargo Collective is the ultimate portfolio site builder available now. After choosing one of the more than 30 templates, you can use the Cargo content management system to further customize your site and control how exactly everything will be displayed. For this you'll need a bit of HTML and CSS knowledge, but if you don't know a lick of programming, the service will still serve you well. Other cool features include the ability to run fully configurable image slideshows, cloud-based image storage so you don't have to upload your stuff elsewhere, and built-in audio and video players—no more YouTube or Vimeo videos on your site.