I don't know if this lick has already been transcribed elsewhere, but I really like it, and it's not too hard to hear and copy without any tab or music.
It starts with two bars of descending chromatic notes, starting at G at the 12 fret and alternating in kind of a stutter pattern between fretted and open notes, much the same idea as he used in "Minor Blues" ... see Andreas Oberg's "Gypsy Fire" pg. 10.
Then he answers that with a two bar pattern that he plays at frets 10 to 13 on the D, G and B strings that includes some typical Django left hand ornaments on the G string with two fingers before an unexpected ending on the second string C to A.
It's not hard and it sounds great. Try it at half speed first, you won't have any trouble.
I live in a little tourist town called Niagara-On-The-Lake, Ontario, Canada, which is about twenty miles north of Niagara Falls.
If you are ever planning on visiting the beautiful Niagara area, feel free to PM me and perhaps we can get together and do some jamming.