How can I create a template email in Gmail that will bring up the template and let me fill in a couple of fields in the Recipient list, Subject and Body of the email?
Gmail have changed a lot since this question was posted. Nowadays instead of Canned Reponses it use the term Templates but it's disabled by default.
- To enable Templates go to Gmail Settings, then to the Advanced tab.
- To create, change, insert or delete a template, click on Compose, then on the More menu > Templates
For details see Create email templates.
NOTE: Templates could be used for auto-replies by using a filter.