I did not rehydrate. My research on this lead me to believe that it isn't entirely necessary. The jury is still out on this one though. It seems like some swear by it and others find it a waste of time. The only way to get to the bottom of it is for me to experiment both ways myself and go from there. If I use dry yeast in my next batch, I will rehydrate it.
The bigger the beer, the more critical it is to pitch a sufficient quantity of active, healthy yeast. Rehydrating dry yeast allows the cells to plump back up and prepares them to endure the osmotic shock of being pitched into high gravity wort. Rehydrating takes 20 minutes tops and costs nothing, why risk all the work, money and time you invest in brewing a batch?