Harrison also played special teams on a regular basis, making him one of the few regular NFL starters to also play special teams. His most notable special teams play for 2008, however, arguably cost the Steelers their game against the New York Giants in Week 8. With the Steelers leading 14–12 in the fourth quarter and having to punt from their own end zone, Harrison played as long snapper after regular long snapper Greg Warren suffered a season-ending knee injury earlier in the game. Harrison inadvertently snapped it over Mitch Berger's head for a safety, tying the score.