A Sienna? Stylish? Considering Toyota's minivan has always erred on the side of dowdy, it's an amazing feat. I know some consumers balk at the sight of sliding rear doors, but designers have done a great job of injecting some pizzaz into this third-generation model. In fact, I'd argue it's almost more attractive than the Venza crossover, which seems to have inspired a number of features on this minivan (including the unfortunate dash texture Amy mentions).
Granted, this full-tilt XLE trim does include a number of accoutrements, but the Sienna itself seems like a solid choice among minivans. The 3.5-liter V-6 provides adequate muscle, and the throttle response and transmission calibration provide a prompt downshift when you're really searching for power.
I love the idea of the sliding second-row bucket seats for when you carry adults - not children - in the second row, but as Eric notes, they don't flip, fold, or tumble to make way for cargo. Short of removing the seats altogether, your only option is to push the seat backs as far forward as possible, until they virtually touch the front seats.