Dikk! - the closest thing to telepathy
Just say "Guys, check this out!" and hit F1 to send a screen capture of your current window to your friends or coworkers on local Bonjour network.
Are you fed up with having to get up from your computer thirty times a day and to scramble over on stiff legs to your coworker's desk to have a look at something he or she wants to show you on the computer? Then Dikk! is for you! Dikk! takes this monotonous and annoying bit of physical exercise away, leaving the pure fun and utility of these shared inputs.
There are a few simple options, like F2 lets you