Here are the 5 latest themes from the Wordpress Theme Viewer.

Sonata - an elegant and beautiful 2 column fixed width wordpress theme.

BlackVerse - a sleek and smooth 2 column fixed width wordpress theme.

Simple Black - 2 columns, Black, Fixed width, Widget ready, Rounded corners, Right sidebar.

Clean Copy - a 2 Column wordpress theme that uses the shades of clean blue, grey and white. Designed for blog content and sharp simplicity.

NotePad - a clean 3 Column Layout . This Theme automaticly shows the last 5 Comments.