Blog Oh Blog v2.0 is a 3-column, widget-ready, minimalistic theme with support for a sitemap and sIFR.
Kubrick 3-C is a the popular Kubrick theme in a 3-column, widget-ready layout.
Maggiociondolo is a 3-column, minimalist theme built on Sandbox.
Restaurant is a 2-column, simple theme that comes in two varieties – AJAX and no AJAX.
Synergy is a 2-column, dark-grey theme with blue header and highlights.
neither version of Restaurant theme is widget enabled.