Pros
I have bled green - worked for NVIDIA longer than anywhere and I've been around a long time. I've seen it grow from tiny to huge. The growth was phenomenal until 2008 or so. There are some great and very smart people here. Products are good quality. Mistakes are used to learn from. There is a very distinct culture here. Work hard and well, work hard. Relatively flat organization. Politics exist but I always felt like I could pretty much talk to anyone in the organization at any time to get things done.
Cons
Business-wise - CEO bet the farm and lost (too late) on a lot of recent products. Trying to pick up the pieces now. Problem is, because of the previous success in PC-business, they think they can replicate that success but revenue has been stagnant (+/- within $4B/year) for the last 5 years or so. Gross margins are high - probably because they are so cheap on spending. I have had the pleasure of having fantastic bosses for the first phase of my career there and absolutely awful bosses more recently (unfortunately, they think they are good). Culture in my group involves yelling occasionally. This was precipitated in the early days by the CEO and seems to be the norm and accepted. On the one hand, when its yelling at the situation I can take it. When its yelling at me for no good reason other than lack of tact, its time to consider my options elsewhere. I used to work hard and feel good about it as the stock was going up and it made sense. I could see my impact to the company. I used to pride myself as not being a cog in the machine like at some other companies where you are a nameless engineer just doing your job. I really felt like I made a difference. Unfortunately, this is no longer true for me and I think for a lot of others. People used to stay long and work hard and feel good about it. Now I think there is resentment (for those that work long) and others just pretty much work and go home.