When I first started at Yahoo! in 1996, every Friday the company would set out free bagels (a perk about which several friends had to eventually tell me to shut the hell up.)
Since then, things have gotten progressively cushier for employees at Silicon Valley's winners, as you'll see in this infographic from ResumeBear, via Mashable.
For example, amenities at Google include free bike repair, dry cleaning, and car washes. Facebook provides laundry service and leather repair. LinkedIn comps Yoga/pilates classes.
The chart also includes food perks (lunch and dinner from gourmet chefs at Google), vacation time, games and activities, stipends and reimbursements, and medical and retirement benefits.