Pros
I really can't say anything good or bad about the company because having worked at a branch as a teller, it all depends on your location and your manager. I've been fortunate enough to have gone through 3 managers of which the last two were fantastic. The branch was located in a small neighborhood so we always had the regulars. Of course, not all customers were friendly, but hey, it's retail. I actually started my teller position with WaMu which became Chase after about 6 months. One of the best things about having worked at Chase was their great benefits (including 401k match and yearly bonus into 401k!). If you ever had questions regarding HR related issues, HR employees were more than willing to help. I think after all the lawsuits, Chase has grown to be a better bank, especially in the west coast (CA mainly....) If I had the chance to work in the back office for Chase, I'd definitely go back!
Cons
As mentioned above, if working at a branch, it all depends on your manager. I had a manager who treated his/her employees like dogs. Then along came the most awesome managers!