really no one can think of anything?
1)deposed a truly evil man <-- this is a big thing that people seem to forget. despite what our media says, the iraqi's still say life is better now than it was under saddam.
2)kept a promise to the shiites
3)showed the rest of the world that if you intend to sign a treaty with the US, you better live up to your side
4)if we leave the Iraqi's when they are stable (ie. not a cut and run strategy), we will have a second ally in the region as opposed to just israel
5)helped secure israel
6)it forced the terrorist to go into a reaction mode which made killing them off more efficient
7)showed the UN that if they will not enforce treaties pertaining to the US we will.
8)gave the iraqi's the opportunity to forge their own social contract like turkey and lebanon
9)gave us a better military position for the semi-cold war like atmosphere with iran
10)increased oil prices have led to increased investements in alternative energies around the world.
11)syria and iran the two most active state sponser of terrorism now share borders with a US friendly state.
12)Lybia turned over all their WMD (some of which no one knew about) as a direct result of the Invasion.
13)removed over 1.1 metric tons of radioactive material (that number is off the top of my head so verify the number before using it).
14)A.Q. Kahn, a Pakistani nuclear bomb designer was exposed and his black market operation which included North Korea, Libya, Iran, and Al Qaida was shut down
15)Saudis are now holding municipal elections as a result of their own people seeing the freedom of iraqi's and demanding it in their own land
16)saddams psychotic sons can no longer rape and kill people
those are just a couple off the top of my head. Im sure that their are plenty more.