My screen name comes from the Trick Dog cafe in Irvington, Virginia.

Long story short...I do tech support for a major POS company and was helping one of our techs with some problems at the Trick Dog Cafe . I received a Trick Dog Cafe T-shirt in appreciation of my help so my fellow workers started calling me Trickdog and the name has stuck...albeit slightly shortened to Trickdog.

More Info
http://www.trickdogcafe.com/about.htm