Live Search, formally MSN search, introduced a new search command called LinkFromDomain. As the name suggests, you can view all outbound links from a specific domain.
For example, a linkfromdomain for this site would look like this.
Among other research possibilities, this is a great tool to check reciprocal link partners if you have any to see if they giving you credit for linking to them.
For more information on other Live search operators check out this page.