James Callis shirtless in Battlestar Galactica 4-14 "Blood On The Scales"

James Callis shirtless in Battlestar Galactica 4-10 "Revelations"

James Callis shirtless in Battlestar Galactica 4-07 "Guess What's Coming To Dinner"

James Callis shirtless in Battlestar Galactica 4-04 "Escape Velocity"

James Callis shirtless in Battlestar Galactica 4-02 "Six Of One"

James Callis shirtless in Battlestar Galactica 4-01 "He That Believeth in Me"

James Callis shirtless in Battlestar Galactica 3-13 "Taking a Break from All Your Worries"

James Callis shirtless in Battlestar Galactica 3-10 "The Passage"

James Callis shirtless in Battlestar Galactica 3-07 "A Measure of Salvation"

James Callis shirtless in Battlestar Galactica 3-06 "Torn"

James Callis shirtless in Battlestar Galactica 3-05 "Collaborators"

James Callis shirtless in Battlestar Galactica 2-11 "Resurrection Ship: Part 1"

Jamie Bamber and James Callis shirtless in Battlestar Galactica 1-12 "Kobol's Last Gleaming: Part 1"

James Callis shirtless in Battlestar Galactica 1-10 "The Hand Of God"

James Callis shirtless in Battlestar Galactica 0-01 "Mini-Series Part 1"

James Callis shirtless in Blood And Treasure 1-06 "The Ghost Train of Sierra Perdida"