I used to, but I am dangerously close to getting thrown into an asylum, so now I really gotta be careful with stuff like that.
Do you play with yourself?

Well the good part is you never lose when you play against yourself. :p
Sure you do unless you draw them all
I see what you did there WellRounded. :S Anyway I don't play against myself much, somehow it's not much fun. I do analyze openings though, if that counts...

I think I did it maybe once or twice because nobody around wanted to play...but it was terribly boring...if you could find a way to forget your plan from each side it could work. Maybe bullet with yourself could be ok.

what was the furthest you got with pi?

Yeah, if the position is interesting and I want to look at it -- it's pretty rare that I play a whole game from the starting position. The trick with playing from the beginning is to be honest and not slightly favor one side, when I'm trying as hard as I can for both sides it's always a draw but then I know I did it right.
But if there was a critical position or interesting endgame from a club game when I get home I might set it up and and try to convince myself I had a draw/win or my opponent had a missed draw/win... so like you said it's pretty much the same as analysing.

I used to do this and intend to start doing it again. At first I found it boring and annoying unless I stretch out the length of the game to the point where I'm only making a move or two a month. You have to be able to absorb the game from one sides point of view and then discard that information and start again. This is easier done over a period of time.

At first I found it boring and annoying unless I stretch out the length of the game to the point where I'm only making a move or two a month.
wow, wouldn't that mean that a game could literally take years to complete?!

I find that if I sit on my right hand for a couple of hours if feels like someone else is playing with me. It's part of the autodidactic sub-branch of the counter-intuitivismism movement.

Well the good part is you never lose when you play against yourself. :p
Sure you do unless you draw them all
Good one.
lol.
Anyway seriously do you ever just sit down (OTB or on a program) and try and play both sides of a game? Perhaps this isn't entirely uncommon and I'm just unaware, but I was standing over my board thinking about the idea and because you would avoid ridiculous tactical errors and it might help develop a very positional game. Maybe I'm way off here, but really I just want to know what some players thoughts.
EDIT: The point really would simply be to play out a game attempting to make the best possible move for both sides. I think the playing against yourself creates the wrong image, but the Idea is basically the same as analyzing a game. Instead of looking at a game deciding your moves and then looking at the moves made, you simply play the game out with your move.