[video=youtube;kw-RzN4xYyE]http://www.youtube.com/watch?v=kw-RzN4xYyE[/video]
I've been using Jelly Bean 4.1 for about a month now and it gets better and better as it goes because it learns my habits and tendencies and does stuff for me without even having to ask it anymore. A buddy of mine wanted to put Siri up against the Google Now feature several times and finally conceded that Google has one that battle as far as functionality goes. I've been THOROUGHLY happy with this version of Android thus far.
It will pretty much do whatever an iPhone will do and then some.
More than an iPhone, if you know how to use it. Just rooted the Nexus, installed Cyanogen 10 nightly and Franco's 512mhz/gpu Kernel...purrin along quite nicely Gnex might not have the latest specs, but it's sure fun to play with!
It takes about 5 minutes to root your phone. Just google it and you will find all you will ever need. Since I own a Nexus I go to nexushacks.com for my stuff. If you have certain Motorola android devices there is a way for the cell dealer and Motorola can look to see if it had been rooted. The code breaks down like this 0/0= never rooted, 0/1= rooted in the past but not currently, 1/1= currently rooted, and there is also 2/1 but not sure what that is. I reckon that these will only come into play for warranty work. Just an FYI kind of thing.