Charlie is the audio-video tech guy in Silverado 2. And a self proclaimed 'vidiot'. 
He (like many of the room techs) gets to see me running around the Canyons during pre-con, as I make sure our pre-con presenters (and attendees) have everything they need to deliver successful sessions.
When I asked him "What are some tips we should share with presenters to turn them into rockstars?" he said one thing: "Come to your session 10 minutes early to get your mic on." Apparently, many presenters aren't used to sporting the lavalier on a regular basis... and putting on the mic on early gives them a chance to acclimate to the foreign object by their face and get mentally and physically prepared to deliver their arias and solos.
So, to all session presenters... listen to Charlie!
