It's epidemic at APA the last two years, people taxiing out onto the runway. The FAA auditors liked the special procedures of ground sequencing aircraft up to the hold lines, but didn't like those numbers, and worked to create the defined run up areas for ground controllers to give to pilots as a specific destination during ground clearances, but obviously the problem reappears when someone says they don't need a run up.
Nit-picky, but I don't hear the words "hold short" from the ground controller to the guy, and one of the operational areas the FAA auditors were concerned with was the phraseology "taxi TO runway XX". It implies in people's heads "on to" which it should NOT, but it's happening often. Far too many pilots can't get it through their thick skulls that unless a clearance is given onto the runway, they don't go out there.
I like the special procedures. They work fine if you have two brain cells to rub together. But I have a feeling if the runway incursion numbers continue to climb, they'll be forced to go back to the old way which caused significant traffic jams on Alpha when someone would pull out of the run up area and clog the taxiway and mess up the sequencing.
It's really not that hard, but people keep F-ing it up. I heard someone tell a story that they did it recently, but in their head they were "cleared onto the runway" and the person in the right seat giving a CHECKRIDE didn't catch it either. The nonchalant nature of how the story was told really had me seething inside, but I've learned that once someone like that thinks they were right, calling them out by saying you know the special procedures cold and the story they're telling could NOT have happened that way, doesn't go over well with them. Denial isn't a river in Egypt.
Note also how many people had to be prompted for whether or not they need a run up. The special procedure to "VFR departures, notify Ground Control your direction of flight, notify Ground if a run up is required" has been on the ATIS now for over a year as of November.
They had wording on there for a while that "all departures will be sequenced to the hold line by Ground" but they've been playing with the wording trying to make the ATIS shorter and I think it's not on there right now.
Also, do you think that his "my passenger stole my pen" will save him? 
