For those of you who have Live Communication Server installed but have not made switch to using Windows Mobile (and why not?) then take a look at the Blackberry website where you can now get hold of a Blackberry client for Live Communication Server.
No matter where, when and what device you are on, you now have access to the rest of your company through Live Communication Server!
Although, really users should consider moving over from the dark side ;)
I would of course recommend Windows Mobile myself but in the instances where this is not possible, at least you can get presence information on your chosen device.
One of the true changes to my work-life balance was getting my iMate Jam – not having to get my laptop...