Here is Businessweek’s assessment of the best places to start. A few caveats: 1) It assumes you want to be at a big place, 2) all lists like this gloss over lots of intricate details that are important to you as an individual. Ernst & Young may be a great place to work for accountants, but not if you don’t want to be an accountant. You get the idea.
Never-the-less, its an interesting list and set of articles that get at the realities of big company life and how the workplace has changed over the last few years for new hires.