Do you know the name of this movie?

I remember exactly one scene of this movie, from when I was really young, so it was in theaters probably around 2000-2005, give or take a few years. In the movie, I believe they are trying to erase a man's memory. They show a computer screen that shows cells, and everything on the screen is colored some shade of green. A probe of some kind goes in and destroys a few of the cells. They wake the man up and ask him what is the last date he remembers. He replies August 18th.

Please, this memory has stuck with me for some reason and I have never been able to find the source. What was the movie called?