Best website statistics package?

goodminton asks: "As the webmaster for a small but growing e-commerce site, I'm becoming increasingly interested in the quality of our site metrics. We currently use a Javascript-based counter that provides good but basic information, however, a recent Slashdot posting has me thinking the stats from our system may not be as accurate as we'd like. What do you think is the best website statistics package, and why?"

Re:None

[Jester998]

And yet for some reason, people still like having them, even when they know the numbers are totally wrong. I have yet to figure out why.

These metrics empower us by quantifying the effectiveness of our economic paradigm, and allows us to leverage synergies with other business divisions. Furthermore, we can collect empirical datums, which may allow us to project customer interactions with our portal, and allow our business methods to expand dynamically going forward. Oh, and it'll help with that Web 2.0 thingy project...

Did I miss any management buzzwords-du-jour?