Dealership:
Brown's Nissan or Arlington,VA 
Salesperson: Emil Short
Rating: Good - 3/5 stars
Experience: Sales / Service
Emil is a very good guy, just not too knowledgeable about the Titan. He even advised us against buying the "Red Alert" color at one point, saying it would soon be discontinued. Not very smart on his part. However his sales manager was a very slick guy (a good match for my father), and we ended up getting a pretty good deal at the time. I would definitely recommend Brown's Nissan again... since they are an inner-city dealership, they have a lot of Titans they can't move. Service department is okay, I would rather go to someone else (they were not very obliging or helpful to me).
Dealership:
Hall Nissan of Chesapeake, VA 
Rating: Excellent - 5/5 stars
Experience Sales / Service
My family has bought 2 Nissans from them, all of our 6 Nissans have been serviced at their new facility. They have an amazing service department and sales, and they are now stocking more vehicles than ever before. They have performed the brake judder TSB and A/C TSB for me with no questions asked. I always bring the guys there something to eat, theyre THAT good to me. Red Team leader Stuart and I go back to 1996 when we got the Maxima, he's a great guy and does amazing/careful work! After the A/C TSB I check the plastic clips that hold the radiator cover on, and they looked brand new (this is a part that is easily eaten up with a screwdriver by anyone no matter how careful).
Dealership:
Sheehy Nissan of Glen Burnie, MD 
Rating: Excellent - 5/5 stars
Experience: Service
I have absolutely no affiliation with this dealership, and they were able to change out my rear diff when it died in approximatley 8 days. That is VERY fast.. the salesperson was working with Nissan to get the assembly shipped ASAP, and the techs got the job done over a holiday break (Thanksgiving). The service manager who helped me, George, was new there but very helpful and he know what was up with Titans. This dealership also sells lifted/custom Titans so it is unlikely they will give you a problem with mods. I highly recommend Sheehy of Glen Burnie!!
-Cyrus