Anyone have a method for downloading flash videos?

Anyone out there download flash videos from websites? Whether it be through an addon in something like firefox or some type of program. I've been using this program StreamTransport for a long time, but it stopped working with videos on PBS because the program is based off of the IE6 browser, and of course, more and more websites are dropping support for it.

Reason I ask is, I like to download lots of news shows and save the FLV files to my computer than play them on my computer at 1.5, 2 or 2.27x saves me a lot of time.