Over at Macworld.com, Rob Griffiths, has put together a nice tutorial on how to set up some shortcuts to get to your shared screens on other Macs on the network.
From the article
"You can create a shortcut to any screen sharing with any machine on your network by using your Web browser, and a special URL. The URL takes the form of vnc://address.of.machine, and address.of.machine can be either a raw IP address (i.e. 192.168.1.203) or that Mac’s Bonjour name, which is typically whatever you named the machine, followed by .local. I prefer to use the IP address, though, because that [...]