Podracer is a podcast aggregator that gets the enclosures from a list of podcast feeds and stores them in a specified location. It supports BitTorrent, http and ftp downloads and runs best as a cron job to retrieve podcasts throughout the day.
I bodged podracer to pick out specific strings from the file names of videos in the feeds so I only fetched the video variants that I was interested in and not every version of the same show. The strings are specified as an optional 3rd field on a subscription line. If there's any interest in this bodge I can provide some diffs. It's been running like that for over a year on my sheevaplug - I actually forgot about it entirely. Very useful indeed.