Sony Ericsson was showing off their Xperia X10 and the X10 mini.  The UI was fluid on the X10 and the mini seemed to have more of a redesign to fit the smaller screen.  Icons were in the 4 corners of the main screen on the mini as opposed to the typical Android arrangement.  Both phones were responsive to touch and input.  Sometimes you felt like you were lost in the 'blueness' of the UI's but overall it was a good experience.  No multitouch from hands on experience.  Maybe this will change however at some point in the future.

Sony Ericsson Booth At CTIA 2010

Xperia X10 At CTIA 2010

Blackberry emphasized 3rd party software partners at their booth this year.  Some of the partners were demoing their software/products in various pods around the booth.  Since we are not in the BB Alliance our software is independent of BB and their pods.

Rob (Total Control) Blackberry Booth CTIA 2010

Ana (Total Control) Blackberry Booth CTIA 2010