LikeFindsLike

This tool helps you quickly select a bunch of similar items that are scattered all over a page or a spread.

Instead of having to shift-click-click-click to select a number of scattered frames of the same type, you can now select a single frame, and then use the Select All Similar function (preferrably via a keyboard shortcut) to select all the other similar frames in one go.
What's new in this version:
CS5 support.