After a VERY long wait, it's just what Donkey Kong Country fans have been wishing for.
To begin with, it's stunningly beautiful. Absolutely gorgeous. The visuals had far more of an impact on me than the first time I laid eyes on the original back in... 1994 was it? And those were amazing for that era. The combination of delightful sound effects, pleasing music, and astounding visuals is like hardly any other game out there for the Wii. Retro Studios nailed these aspects.
The gameplay itself offers a slightly steep learning curve. I found the first three worlds to be enjoyable yet challenging. Upon entering the fourth world, I discovered that "challenging" was word I was using more and more often, and eventually I was just using "this game is HARD!" (Crowded Cavern.... ARGH). Oh yes, that was another thing that appealed to my nostalgia: the nifty naming of the lovable levels. Alliteration, anyone?
I believe the game is certainly worth the price, although it's not cheap. Anyone who grew up in the NES/SNES era should definitely pick up this one; it's a wonderful trip back to the 2D side-scrolling adventures of yester-year.