Black Sakura is a clean and trendy-looking WordPress theme from ThemeForest which uses WooThemes Tumblog plugin to create a Tumblr-like post types. It is perfect for a personal blog / micro blog but also will do fine as a portfolio or photo gallery. It has 2 skins: day (light) and night (dark) with can automatically switch depending on your time of day.
Smart Subnavigation System
Custom Widgets: Twitter; Flickr; Recent Posts; Categories, PostTypes, Feedback for, etc.