As far as corporations go, I would say it is one of the better ones. I recommend this to people who have worked at other similar companies and don't mind this.
As for my experience, it wasn't great. For some background, I have a diagnosis of Asperger's Syndrome and have been in IT for some time. I hide my symptoms rather well, and most people are surprised when they find out what I have.
But at LM, people knew I was different and it showed in the way I was treated. I was called weird on a number of occasions, and had a lot of negative experiences in general (a lot which left me in shock, as I haven't experienced this in smaller organizations).
So to anyone that is like me, please be cautious of corporations and only join if you are thick-skinned and can handle office politics.