Just been working on some responsive themes and example sites that may well suit websites needing a better mobile/tablet exposure. http://www.soul-trade.com/bookresponsivegallery/ has 5 or 6 new ideas/themes with screenshots of their mobile & desktop appearance together with links to the actual working demo sites.
(pull or pinch your Browser window from its bottom corner, to replicate a mobile or tablet and see how the themes respond)