Here's another timeline of Inception from deviantArt user, dehas. This one has the kicks in it. Start on the bottom left, and follow the character lines counter-clockwise. Lines end as characters die off in each level.
The 3-d angles are a little weird, but doesn't take away from the graphic too much, if you've seen the movie. Joseph Gordon Levitt's tweet about the graphic just about sums it up: "Diagramming #Inception - The movie itself makes way more sense than this, but it's a beautiful graphic." Can't get a much better recommendation than that.
Which one do you prefer: this one or Sean Mort's flowchart? Sound off in the comments below.
Also: the confusion still remains. Was level 4 a dream, or did Cobb and Ariadne follow Fischer into Limbo? This graphic shows the former, but Sean revised his showing the latter.