This review contains MODERATE SPOILERS for “Dim Sum Loose Sum,” the fifth episode from the second season of ABC’s “Pushing Daisies.”Stories of Pie Maker’s (Lee Pace) father have been floating about since the opening of the season, but until now these have been restricted to flashbacks, stories and subtle nudges to a future reunion. “Dim Sum Loose Sum” though brings the life of Ned’s father to the forefront of the series.And to the episodes credit, even at the forefront of the episode, Ned’s complicated relationship with his father are tastefully kept to the sidelines in favor of a more random and typically “Pushing Daisies” storyline; the death of a chef at the hands of a food steamer.This bizarre death of being killed by an exploding steamer is another creativity notch on the “Pushing Daisies” …