A couple years ago I took the effort to watch all of the FS 100, and it was so worth the effort. Not to be a clone of the community, but to have a basic, well-rounded film education. The personal lists are challenging and quirky and certainly a lot more fun to read. But the FS 100 makes for a great basics list, whether we agree or disagree with the certain films. Although I really disliked Goodfellas, I'm glad I watched it, if only to perpetuate the conversation.
And the chat on any of the lists is always fantastic. For those who haven't participated in the chat during the posting (whether top 100 or 100 performances or whatever), please participate. It is one of the best parts of this community.