I'd say my favorte lick was on Loves Holiday off the All in All album by Earth Wind and Fire. In the second and third chorus in the middle of the third line as Maurice White sings "Love" (the lick is here) "has found its way. "It amazes me how Johnny Graham takes a slow scale and can execute it perfectly between words like that.

Other than that, I love the base runs in Blind Willie Johnsons Let Your Light Shine on Me.

That's all that really comes to mind right now. Get back to me.