Look at these definitions -
Character-driven: When something about the character's essential self leads to a particular action or event in the story.
Plot-driven: When a character takes a particular action so that the result is a particular plot point.
Honestly, even in an action movie, there is something internal about a character that makes him take whatever actions he takes. The failure, I believe, in edittorrent's way of looking at plot and character, is that it assumes something about the author's intentions, as opposed to the actual work produced. It also assumes that "plot" means there is a fixed endpoint the author is trying to get to, whereas "character" has some open vista of exploration of the characters.
Ummm. That ain't the way I write, or anybody I know.
In fact, if you go to Damon Knight's Creating Short Fiction, it's more a process of narrowing the possible plot based upon "what's the worst thing I can do to this character?" and narrowing the character based upon "who's the worst person this could happen to?" Except that I can't find it in that book.
Aargh. Where is it???!
Perhaps Orson Scott Card's Characters & Viewpoint?
Yes! Page 23.
I only had to check nine books to find it. And in the process I ran across something relevant in Sol Stein's Stein on Writing. He points out the obvious truth that the key to a reader's interest is giving the character a strong need and then thwarting it. The need is the character-driven part, the single need, the thwarting and his attempts to overcome the thwarting are the plot part.
My take: if the need is something external, like stopping a terrorist from blowing up the next bomb, you end up with a plot-driven piece. If events cause other events, willy-nilly, without input from the characters, you have a plot-driven piece. If the need is getting Mom to stop ... doing something annoying ... then you have a character-driven piece. If the events have no real relationship to each other, except that they happen mostly in sequence to the same people, then you have a character-driven piece.
But in either type, you'd better have a lot of the other, or the middle third of your audience will get bored to tears.