"We don't do Body Counts" General Tommy Franks.

The format is as follows:

City, Country (Source): Number;

Big events:
London, UK (STWC): 100,000;
Edinburgh, UK (BBC): 1500;
Dublin, Ireland (BBC): 1500;
Rome, Italy (NL.IMC): 100,000;
Ankara, Turkey (NL.IMC): 4000;
Paris, France (BBC): 3000;
Athens, Greece (BBC): 3000;
Seoul, South Korea (BBC): 2000;
Los Angeles, USA (NL.IMC): 3000;
Brussels, Belgium (NL.IMC): 1200;
Madrid, Spain (NL.IMC): 7000;
Lucca, Italy (IT.IMC): 3000*;

Smaller events:
Berlin: 400;
Stockholm: 250;
Vienna: 200;
Warsaw: 100;
Duisburg* (Germany) 300;

* My translating has made the exact details of this demo sketchy for some reason.
I estimate I'm missing around 40-45 demonstrations, which would put the figure to over 250,000 (and possibly over 275,000) and I'm still not totally sure about the Rome demonstration, not that I doubt it took place.

Now for your bit; if you know of any demonstration not mentioned above, or have a higher figure from somewhere, please whack it down in a quick comment (see link below) and I'll up date it. It should be either an Iraq/Palestine solidarity or end the occupation demo, or one targetting a government for its involvement.
I need the source (for indymedia sites, please state which centre), city, country and figure for each. Hopefully this way we can come up with a big but accurate count. I don't care if it was only small, I just want the closest I can get to a worldwide demonstration total. One day I might start a website which does this job, using the exact same rules as the IBC count does.

(And please, no "lies, damn lies and statistics" jokes!)