In this days, OmegaTheme released a nice free minimal portfolio template, called OT Dulcet, which comes with in-build widescreen Hot Effects Rotator support. Powered by OMG Responsive Framework, this template based on a clean CSS and PHP source code. Multiple module positions are available. OT Dulcet supports also multi level menu's. You can download for free on developers website. A registration is the condition. OmegaTheme provide this template for Joomla 2.5 with HOTQuickstart.
JF Calla Exteriors is Joomfreak's new template realisation for Joomla 2.5 and Joomla 3.0. This template comes with a fullscreen portfolio layout, which display your content with a fine scroll down function. Furthermore, 10 module position will be delivered. You can also integrate Google Maps or social media icons. The download is free, a quickstart package is included. JF Calla Exteriors is best suitable for portfolio websites.