With the release of Summer '07, we're able to create custom report types which is great. However functionality available in some of the standard reports are not available in the custom report type. The one that is impacting us is when creating Activity custom reports. There is a field called Type, that if selected displays numbers rather than the picklist values that are available through the UI. Activity reports built off of the standard report types do not have this limitation. Without the type of activity displayed with the picklist text users are familiar with, custom activity reports can not be used by us.