I've just released a new version of the CiviCRM Webform Integration module for Drupal 6 and 7.
This module provides a flexible and powerful way to create forms linked to the CiviCRM database. Version 2 of the module is built for CiviCRM 3.4/4.0, and can create and update contacts, group subscriptions, tags, relationships, cases, activities, event participants, and custom data.
New in 2.3:
If you're interested in the future of this module, check out this post about supporting more entities.