Cleaned the work computer tonight.  Fan had been kicking in more than normal, laggy performance, etc.

You would not believe the amount of shit I got out of this thing.  Took two cans of Air Duster to get it clean.

5 hours later and I have yet to hear the fan kick on.

What is amazing is that we have a pretty clean environment hear.  My house is dusty and we have a cat, yet every time I open my personal computer, I rarely see a speck of dust in the tower.