It is rather jumpy and clunky on my NC. I wonder if it has to do with the complexity and size of the web page. Please try this URL to see how it works on yours: http://movies.yahoo.com/ and also http://www.cnn.com/ as both of these are extremely slow and jumpy when using pinch and zoom on my NC. Not a good experience at all in my case!

I've got high speed internet, so that is not a factor. I just compared my iPod touch 4G side by side to the NC and here is how I rate the pinch and zoom on each using a scale of 1 to 10 where 10 is the best rating:

ipod touch 4G: 9
nookcolor: 2