Watch the Dorian Funk online guitar lesson by Robert Renman from Blues Booster
There's a lot happening here. Besides Dorian, I also use the C & D Triads, to make the playing more melodic. Those triads also fit perfectly into Dorian. I'm using a slightly unusual way of playing a C-D triads lick, check it out. Now, it can get boring to just play a scale randomly, so I make use of some rhythmic phrasing through repetition, triplets, and the 4 note pattern. Remember to not overuse patterns, or playing will sound too much like practice. I'm also sneaking in the Dim scale here, because I think it's the hippest scale there is! If you use it tastefully, I find it adds such a cool hipness factor to solos.