The seats are large and cushy in all trim levels except SRT8, the better to enjoy the generous interior space. On Laredo they are upholstered in cloth with leather as a package option, while Limited seats are two-tone leather with perforated inserts. In Overland, the seats are upholstered in saddle-perforated high-contrast two-tone Ultrasuede, featuring accent piping and embroidered Overland logos. Overland also features real wood trim on the steering wheel, instrument panel, door panels, and gear selector. The center armrest is leather-upholstered, and unique colors are employed in the instrument cluster.

The SRT8 goes for the high-tech racer look with deeply contoured sport seats, and lots of carbon fiber and aluminum trim. Unique blue-accented gauges include a 180-mph speedometer plus oil pressure and oil temperature readouts in the center stack. The sport seats offer lots of support, with deep side bolsters, but drivers with larger frames may find them too narrow.

The instrument panel on all models is a cohesive design with a nice combination of shiny plated parts, matte-finish parts, and a first-rate layout. In all Grand Cherokees, the two-tone, dark-over-light theme set by the instrument panel flows into the door trim.

The available navigation system integrates the audio system and other functions, and for 2008 it adds Jeep's MyGig, a 20-gigabyte hard drive that holds songs, pictures and the navigation information. It can hold about 1600 songs, and you can program it to display your own digital pictures. The screen has a nice display, generates crisp maps, and does a good job of directing you to your destination, both visually and audibly. It isn't as easy to program as similar systems from Acura and Lexus, however. There's a separate Enter button, which can be annoying because intuition suggests pressing the toggle switch down. The daytime setting is so bright at night as to be distracting.

Similarly, all Chrysler products, including Jeeps, use a separate Set button for pre-setting radio stations, which seems unnecessarily difficult. Setting these on most radios is just a matter of holding down the desired preset.

The rear DVD entertainment system gains available Sirius Backseat TV for 2008. The TV system requires a monthly subscription for its three channels: Cartoon Network, Disney Channel, and Nickelodeon. We tried it and found the reception to be good. With Sirius Backseat TV, if you forget the DVDs, you can still keep the kids entertained.

One area of concern for family shoppers is rear seating. Despite its midsize SUV dimensions, the Grand Cherokee's rear seat lacks the leg room to make rear adult occupants comfortable, especially if taller passengers are riding up front. Such an issue might be a deal breaker for customers who regularly carry adult-size passengers.

The cargo area, on the other hand, is quite useful. It features a reversible load floor panel that flips over on itself to create a shallow container, for more versatility in the rear storage compartment. The second-row seats fold down for a total of 67.4 cubic feet of cargo space, but they don't fold flat for optimal utility.