Find all task types currently used

Here is a background script you can use to find all the task types that are used in your ServiceNow Instance. You can use this script in scripts - background or alter slightly to use a script include for a report.  

Background Script

function findTaskTypesUsed() {
var count = new GlideAggregate('task');
count.addAggregate('COUNT', 'sys_class_name');
while ( {
var taskType = count.sys_class_name;
var taskTypeCount = count.getAggregate('COUNT', 'sys_class_name');
gs.log("The are currently " + taskTypeCount + " tasks with a task type of " + taskType);