uTorrent is a great BitTorrent client that is light weight, configurable, and free. The only problem with it, from the perspective of a Mac user, is that it only runs on Windows machines. Here's how to get uTorrent to run on the Mac (or any unix machine for that matter).

First, you need to install WINE on your Mac, WINE allows non-Windows computers to run windows applications without needing a full-blown windows emulator. The Mac version of this is called Darwine and you can get the latest download here: http://thisismyinter.net/?p=21. Just download, unzip, and move the entire Darwine package into your applications folder. If you are using a flavor of unix, there should be a version of WINE available for you, just google it to find it.

But before you can run WINE on the Mac, you need to install the one dependency that it has, X11. X11 is easily installed, it comes on your OS X Tiger Install Disc (#1). Just put that disc in and find the Optional Installs package and double click on it to start the package manager. Just follow the prompts to the 4th step (Installation Type) and when you get there, make sure you check the box next to X11. After that, it's just following the steps again.

Next you'll need to download the latest version of uTorrent from here: http://www.utorrent.com/download.php. This will save as a windows executable file (.exe). Once the file is downloaded, start Darwine by going to Applications > Darwine > WineHelper.app. Once Darwine is started, select Application and then Open... from the menu bar and then select the downloaded uTorrent executable file. This will start the installation of uTorrent on your Mac.