I use e-mule.
Unlike most of the other programs you can download from people who only have the partial file as well as those that have the whole file, so stuff spreads much faster.
http://www.emule-project.net/index.php?s=downloads
You can also click on certain links on some sites that add files to your download list. You can get the links for 24 from sharereactor.com along with loads of other films, software, porn etc. using a site like this you know you will get the correct file by clicking the links.
You can get almost any film on e-mule but the rarer stuff can take weeks to download.
Plus it has more full length pornos than any other network.
The sharereactor forum is a great source files.
It can take a bit of fucking about to get it to run a good speed but its well worth it.