This might be the smoothest solitaire game thus far.  The game runs great and looks fantastic. 

When you play this version use the horizontal view since it will look better. 

iFun4Free.com has created a nice, slick version of solitaire that's designed specifically for the iPhone and iPod Touch.  The game allows you to deal one or three cards at a time and even change the images on the back of cards.  You can do this by tapping the 'opt' button for options.

Other than that - it's solitaire so have fun.