Before I start I'll say this was likely in my top 3 favorites of PVP strips since PVPMMS has started.
Art - Let's start with the small problems: Brent's fingers are fused in panel one. The shading is done well throughout except for one spot: Brent's chin in panel 1-2. I know Scott is trying to show there is a chin there, but maybe the redesign he mentioned would be better. Also, I don't know why there is shade of Brent's ponytail in the last panel, unless his head is blocking out the sun from whatever angle it is at.
Like some of the commenters said before the last panel is the best overall art piece of a PVP character in years. Also, the Doctor remains drawn well throughout and again I think you can tell Scott loves to draw him
Story - Again not a Doctor Who fan but this strip wasn't about pop culture minutia. It was about Brent's girlish glee for tagging along with the Doctor, Scott did a great job with that, and the last panel was hilarious.