YouTube has changed the way you view playlists several times. I liked having the playlist on the right-hand side where I can see all the videos listed and then decide whether or not I wanted to AutoPlay.
Now they have the playlist bar on the bottom: http://www.google.com/support/youtube/bin/answer.py?answer=146749
The problem is that when I go to a person's channel that I want to watch a playlist from, the playlist is embedded in that person's page. If I want to view comments, I have to click another link, which takes me away from the page and away from the playlist. I haven't found an easy way to get to the playlist bar at the bottom for different playlists.
So, I just take this URL and replace it with what I need:
The URL is now in the form: