You probably wont get any answers from real people working there, but here are some links that may help:
Basic requirements - http://www.google.com/intl/en/jobs/uslocations/mountain-view/hr/staffing/recruiting-coordinator-mountain-view/index.html
What it is like to work there - http://www.google.com/intl/en/jobs/uslocations/mountain-view/more/
Photos of the workplace - http://picasaweb.google.com/photos.jobs/MountainViewOfficePhotos#
What it is like to work at Mountain View (videos) - http://www.youtube.com/view_play_list?p=3F9B7BDA2EC653BB