Pros
Autodesk is filled with talented people, all tryinhg to make a difference. The work environment is fun but focused. The CAD software industry is fairly mature but at the same time has lots of room for growth as adoption of technology improves and companies expand. The benefits and salary are both above average, and it is one of the few large employers left in Marin County (although that has been decresing in recent years). The company has a broad mix of products, so that you can move from division to divsion to find a good fit for your background and talents.
Cons
Autodesk has a long history which can prevent it from moveing forward as actively as it would like to. There is a fair amount of internal politics, usually above board and between divisons as they compete for resources. Internal operations can be cumersome, the company has many outdate systems that are slowly being replaced or enhanced.