I love it when tnuk gets his graph head on. 
What's even better is that he's dealing with someone who just skims through Wikipedia in an attempt to pass it off as genuine knowledge in case it comes up on The Weakest Link. I'm smart like that.
I have part of a diagram completed, but it's more-or-less just an art upgrade to what's come before. What I really need to do is to tape sheets of paper together, and draw a timeline. It's really difficult to put it together as something you can view on a computer screen when it's something that can fill several pages of A4 when done manually. Plus, the whole thing would ideally be displayed around the walls of a circular room.
I've said pretty much all there is to say on the issue, in various threads around PEEL. So I'm going to lave off posting the huge-ass diagram I've got in the works until I can be sure of three things:
1. I've got all the relevant bits in there. As svip says, I'm striving to make sense of things, rather than make them scientifically accurate or acceptable. I want to form a model for the timeline in Futurama and the way time travel works, that fits with the show's continuity, canon and internal logic.
2. I've come up with a display format that is both simple to produce and can be easily read and digested by the people looking at it. If it's really complicated, it's not going to be very useful.
3. I've addressed all potential holes in, or issues with, the model.
Once I'm sure of these things, I'll go back to the drawing board and come up with... hopefully a single diagram that fits on a standard computer screen and lays out the Cyclical Time Single Universe model properly.
The Linear Time Multiple Universes model doesn't work, therefore I'm not even going to try representing that graphically. But the CTSU model should be possible to show on a single diagram.
Please can the thread be renamed CTSU vs. LTMU, as the terms CT and CU seemed to be confusing people.
Oh, by the way...
Here's what I have so far.

Seemed a shame to waste it. Click it for bonus content!