Pros
Great team, free snacks, full reimbursement for any technical books, after hours gaming, cool projects - a true nerd's paradise. At the time I was there, medical / dental / vision were also paid at 100%, and a company paid health club membership was standard. We had many 'walking' meetings, which were great.
Kontras
It sounds ridiculous, but there were no downsides at Jetstream; truly a great company.