As part of his presentation " CF911: Solving Frequent CF Server Problems in New/Better Ways ", Charlie Arehart showed a series of examples, searching CF log files with impressive speeds. He mentioned the tool that was being used, File Locator Lite and gave it a great review. Anything that is two thumbs up with @carehart is generally worth checking out.
Today I got tired of Notepad++ text search, which is great but seems to just quit working at random times, and just didn't feel like using Eclipse. So I downloaded and fired up File Locator and bam! it is just what I needed. The link above has examples and screenshots so I won't bother here, but all the options I could think of are visible at first glance, and it does what it says... locates files, fast and light.