#6 Kevin Owens and Sami Zayn vs. Shane McMahon

When this feud got underway in the late summer, it gave SmackDown a much-needed reprieve during a dark period. Between September and early October, the intensity grew explosively. Kevin Owens busting Vince McMahon open in Las Vegas remains one of the most memorable segments of the year. He made his crusade against Shane that much more memorable by name-dropping his kids. It was all very Attitude Era-like in its intensity.
Their Hell in a Cell match was among the year's best and also drew comparisons to Attitude Era clashes. It also provided a major plot twist by having Sami Zayn unexpectedly come to Kevin Owens' rescue, providing his career with a major shot in the arm with his heel turn.
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Although the angle hasn't been as hot as it was in its first month, the two obnoxious rebels are still consistently one of the most entertaining acts on SmackDown, and we're even seeing hints of a double turn in the build to Clash of Champions.
This feud will probably extend all the way to WrestleMania and could well find itself on next year's edition of this list.