Complex sentence: He best known for his television role on the science fiction series "Sliders" as Michael Mallory, the father of Quinn Mallory in the pilot episode, and reprised his role in the season 2 episode "Gillian of the Spirits".
Split into simpler sentences: He best known for his television role on the science fiction series "Sliders" as Michael Mallory, the father of Quinn Mallory in the pilot episode. Tom reprised his role as Michael Mallory in the season 2 episode "Gillian of the Spirits".