Nintendo today announce firm release dates for both Wii Sports Resort and the Wii MotionPlus controller add-on for the Wii. The peripheral will be available on June 8th, and Wii Sports Resort will hit shelves on July 26th.

Wii MotionPlus is a small unit that clips to the bottom of your WiiMote and adds accelerometers and pixie dust to provide extra accuracy and control to you Wii-ing. Wii Sports Resort is a beach-themed sequel to the best-selling game of all time, Wii Sports.

The Wii Sports Resort bundle will cost you $49.99, and Wii MotionPlus alone will cost about $20. The Wii is a social system so you really need two controllers to play the game with your pal. So add the price of the console ($250), a copy of the Wii Sports Resort bundle ($50), a MotionPlus add-on for the WiiMote included with the Wii system ($20), and a second controller ($60), you're talking a total cost of around $380 to have a jet-ski race with your friend. That's a lot of dough for a "cheap" system.

What do you think? Does the idea of one-to-one (just about) motion sensing from the Wii appeal to you enough to upgrade to Wii MotionPlus? Or has Nintendo misjudged the market with its new tech? If the stereotype is true, and Wiis are only played by eight-year-olds and soccer moms, is anyone going to care about improved motion control?