I absolutely love my Lincoln Navigator as it has a good amount of room for my 300+ pound 6'11 self. Its also good for storing lots of friends and stuff, especially for longer beach trips. The only real downfall is the gas mileage. The best feature is the sunroof for my mohawk (and yes the sunroof on this car doesnt kill headroom like most sunroofs). The super-adjustable seats are probably another feature that gives extra room, even more than the Ford Excursion, which does not fit as well.
Mine is a 2004. I really hope the newer models don't sacrifice room. The newer version came out in 2007.