So about a month ago, somone on the AMall boards started a thread calling out Dalnas (and mostly all the Ams out there), saying that he is "lame as well as every other AM" and "is against him being pro for USD or even USD promoting him in general".
This obviously started a war between the pro JD and anti JD rollers who troll the forum [see the whole e-fight here], to the point where Jeff (Jeff Dalnas on AMall) himself stepped in and tried to calm the whole thing down.
As back up for the pro-JD side of the e-fight, this video was introduced as evidence and I was converted imediately. This rail is massive and I get light-headed just watching him hit it.
If that rail wasn't enough to convert you to a Jeff Dalnas fan, check out his Vimeo channel. But in the end you just have to decide for yourself.