Very good this Tommy. Like previous poster's have said a different twist would help at the end as it's the last of a set of three. I was thinking of Sootyj's earlier firing squad sketch and if before Doug was to be crucified he was offered a last request, perhaps if he was to say, 'Yeah, i'd like a sandwich please.'
Just a thought. 
I liked this one more than the other 2. How about having this as the second impersonation, making the first one a bit more gruesome, and that they always affect Doug in some horrible way, i.e. being crucified, etc. The last sketch then could see him as a nervous wreck somewhere, at a comedy club maybe, where somebody starts doing impressions and he runs out screaming? Or something along those lines.
Cheers guys. Think the other two were a bit too lengthy and predictable. Like your idea for this one, Nigel, but one reason people seem to like it more must be the generally faster pace. Sandwich joke might slow it down, but then again it may garner more laughs..?
Like your suggestion too Wayne. To be honest, I wasn't sure about a set of three, and since this one has generated the best response, I might avoid repitition by getting straight to the point... Cheers all.