I like that you can choose which operations you want one handed. For me I want my keyboard to stay large but unlock pattern to be able to be handled one handed.
I like that you can switch the layout of the calc / keyboard / dialpad to either the right or left depending on your dominant hand...pretty cool features.
this is what sold me on the phone. i one hand type 80% of the time, if it didnt have this option, i dont think it would fit as good in my hand for typing.
It's nice little touches like this that might actually keep me from flashing the first rom that comes around lol.
So many new things to poke and prod at.