Pros
The company pays for good talent. It is best to join the company after having worked for a consulting firm or at a competitor. Those that started their careers at Target tend to get paid less than those that joined mid-career. Opportunities abound at Target, just know what you want and know when to express it. (i.e. after you've done something great, somebody who likes your work will ask you if you've thought about what you want to do next. Be prepared for this as it can save you from moving in the wrong direction or help you move into that key next position before it's posted)
Cons
As with any company, it is really important to carefully select the people you want to work with/for. If somebody doesn't like your work or the way you work, you may be coached out of the organization. Target has a very strong culture or being nice, friendly and collaborative. And when it comes time for reviews, your manager will ask everyone what they think of you. If you are not "nice" or "collaborative" you'll hear about it and this is a very difficult image to overcome. Also, you will get a ton of feedback from anyone, anywhere. Just be prepared for it and learn how to sort the good feedback from the bad.