Well, depending on who you ask, I'm sure some people will tell you that those eeevil Americans and their cohorts slaughtered millions of innocent civilians. As far as I know, the number of civilian deaths in Iraq from Coalition activity is FAR below 100,000. In the beginning of the war, some people (mainly liberals who were against the war, mind you) "predicted" tens of thousands of American troops dead, and hundreds of thousands of Iraqi civilians dead. You may be thinking of that. As for Iraqi civilians, though, I would doubt anything beyond, say, 20,000.
Many believe that up to 100,000 civilians have been killed due to the war. (As far as I know, that doesn't only mean bombs, but the after effects as well. [What those after effects would be I don't know]

As far as I know, the amount that has actually been "counted" physically is somewhere between 17 and 19 thousand. However, this ONLY includes being killed by coalition forces themselves. Bombs, bullets, shrapnel, etc. However, anything other than this is not counted. I guess, for instance, if a bomb shut off the water supply to a town, and people died from dehydration, they would not be included in the body count.