is a fun playground for using features that haven't made it yet as a standard Gmail. Earlier this month they launched Mail Goggles
which caused much fervor and debate in the Fastcase office over the utility of such a feature. With the launch of canned responses there can be no question in terms of utility of this new feature. The ability to reply to an email with a standard script is one that I'm sure most business users who have migrated their platforms to Gmail Apps have been clamoring for.
If you are interested in trying out canned responses select settings in Gmail
and then labs.
Source: Gmail Blog