Yahoo

Great work culture and engineering culture, with excellent staff. Much of management works to ensure individual contributors have a career trajectory built into assignments and duties.

Retention is important for Yahoo!, and so there's significant focus on maintaining work/life balance, and training and keeping excellent engineers on-staff.

Tooling and technologies are great. Lots of projects and ability to transition around to keep things interesting.

If you want to have a well-paying job, top-notch benefits, and build large-scale web chops, this is an excellent place to do it.

Yahoo has major challenges in its search for identity and success in 2011. Uncertainty at the executive level, considering we have a new "interim" CEO, however, is likely to be positive for the company on the whole. There is an enormous amount of success here but it feels overshadowed in the press. Most folks detach from the public image of Yahoo! and focus on doing great work. :)