Prezi

[4Eyes]

http://prezi.com/

I know it has been mentioned in passing previously, and some of you are no doubt already using it... but for those unfamiliar with it.....

Prezi is REALLY good - I love it - just knocked out a client presentation which I can 'present' remotely, and it looks great.

Nice short learning curve as well.

[Rooftop]

Coincidence : I signed up today.  Didn't last long though.  I found it a bit inflexible.  It also made me feel rather seasick. 
My children are torturing me with sleep deprivation at the moment, so that might be related to the motion sickness, but it really did!