Rated 4 out of 5 stars
Lightweight alternative to downloadhelper, flashgot, etc. Extremely easy to use, only the necessary options. Will catch any video/audio from anywhere. Seems to be using the cache for it rather than downloading directly from the net.
One suggestion: is it possible to add an Exception list? My list gets full quickly and, after visiting the same page a few times, the same file fills the list.