Rayn Davis was a pleasant surprise for the Jacksonville Jaguars last season. One of the most productive pass rushers (per snap) in the NFL from both the inside and outside, Davis helped contribute to the impressive sack numbers the Jags posted in 2014. He was also an exception in that he generated consistent pressure as well, which was a problem for the Jaguars despite the pretty sack numbers.
In fact, Davis was the second most productive pass rusher from the defensive tackle position (among DTs with at least 25% of snaps) according to Pro Football Focus.