One of the best features of Microsoft Dynamics CRM is Bulk Editing, but the option might not be enabled for your role by default. Certainly you do not want to give the power of bulk edit to everyone, but offering it for the right situation can be very powerful.
For instance if you want to reassign all the leads from a previous employee to a new employee or if you want to mark a selected set of contacts with a new category or classification.
Bulk Edit is a wonderful and yet sometimes unknown feature of Dynamics CRM v3.0