I consider myself an evangelist on SQL Server and BI technologies, but my friend and colleague Lynn Langit has this in her job title. She's a Developer Evangelists with Microsoft, and right now she's on the home page of the MSDN Channel 9 web site, talking about her job.
Check it out: http://channel9.msdn.com/Showpost.aspx?postid=352786
Edit: Damn, that's funny! I blogged this while I was downloading the WMV version of the webcast, before I actually watched it. Now I'm watching it, and laughing my head off.