THAT Music
Three column, red and dark theme with support for widgets, gravatars and WordPress 2.7.
Solitude wpMU
The Solitude WP theme, create your own social network with the Solitude WordPress theme, loaded with a ”corporate” blue/white color scheme, an extensive options panel for full control over the frontpage layout, featuring a two column fluid layout with built in options panel, frontpage news slider and automatic SEO titles.
Simple Blue
Two column, widget ready, blue theme
Grace
It’s a stylish, 3 column, widgetized theme with a jQuery powered rotating gallery on home page.
The Erudite
The Erudite is a two column theme for writers who want readers. Everything has been carefully crafted to provide the optimal reading experience, and no attention has been paid to people who need gimmicks to maintain an audience.
Small_Biz_Green
Small_biz_green is an elegent 2-column, professional looking free WordPress theme. It’s a perfect theme for small business blogs and personal blogs.
Doc
Doc is a one-column theme, with a fixed width and lots of white space. It is intended to spoil your content and to satisfy your users’ reading pleasure.
Clarification: the Solitude theme is for use with BuddyPress, which drives the social networking part. While BuddyPress has to be run on WordPressMU, there is a single WP version of this theme as well. Which runs fine on MU for the blog portion.
I like most Erudit theme.
Just noticed that your date is inconsistent with your other posts on this one. You have 10/5, not 5/10.