Google

Interesting problems to work on, very nice offices, extremely smart coworkers.

If you're very self-directed, you can learn quite a bit and have a great time, but you shouldn't expect much help from other people.

Project scheduling was pretty haphazard.

Inter-team communication was also pretty haphazard.

You were often working with people all over the world, which sounds fantastic at first until you spend days in video conference meetings.

Inept, overworked managers (70 or 80 direct reports for someone who had never managed anyone before was normal).

Distant, ineffective HR (NYC office had 1 HR person for 1000+ employees in the office and was not authorized to do anything except send problems to Mountain View).

Your managers have no clue what's going on.