iMovie '11: Event Library
The Event Library organizes and provides access to your source video, the raw footage you’ve imported into iMovie. By default, it organizes your Events by the disk they are stored on and by the year in which they were recorded.
If you don’t see the Event Library, click the Event Library button, shown below.
When you click to select an Event in the Event Library, the video it contains appears in the Event browser on the right. This is where you select video to add to your projects.