Windowed processes in Activity Monitor!
When you are looking for a process in the Activity Monitor and it is a currently running application, you'll have to go through many OS X processes. In the "Show" dropdown menu, you just have to switch "All Processes" to "Windowed Processes" and only the process of the running applications will be displayed. It is much easier to go through the list and find the one you are looking for. Activity Monitor is an application in the Utility folder.