Mala - Alicia 
One of the finest dubstep tracks. Based on Alicia Keys - Feeling U, Feeling Me (Interlude).
Joy Orbison - Hyph Mngo 
The track that proved dubstep could be commercially successful. This one shook the scene in 2009, and even Sasha played it in Ibiza. Several websites (DJ Mag, Pitchfork, Resident Advisor) wrote about this track when it was released, and even DJ Mag revisited it for its 10-year anniversary.
From the original Pitchfork 2009 article:
"Hyph Mngo" is a gloriously epic celebration of light and heat. Its presence in a hot club drenches venues in warmth and emotion, like rave classics of the early 1990s. Yet instead of sunny foreign islands, it is the unique product of urban London's musical melting pot: Orbison is a producer based in the Croydon region of greater London.