Jeff Atwood of Coding Horror has a post on uTorrent. One of my favorite bittorrent clients. I've been using it for almost 3 years. It's slick, silent, and unobtrusive. What good software should strive to be. The software I'm working is not that. It's complex and intuitive. uTorrent is the best of both worlds. My wife likes it because she can subscribe to a few RSS feeds and get up and running in 2 clicks. I like it because I'm a tuner. It gives me real time information on my traffic, statistics, and error messages. It's tuned to the point where I rarely have to touch it.
Start the computer, wait.... Everything starts automagically. Check the download folder if you are looking for something in particular. When it's done it will be waiting for you. That's it! I occasionally get a phonecall about a program that has disappeared or not in the write place. It happens when an unfamiliar file format is downloaded (for example *.mkv) and doesn't know where to put it.
Did I mention it's light. except for hits on the disk cache I rarely see any activity. 2MB - 20MB is all that's required. Usually, I have a windows update that will interrupt the process but it never complains (except if the disk is full)