 There was initial concern over Reeve 's stamina for shooting the scenes , as his particular scene with Welling was six pages long , which translated to approximately twelve hours of work day . Beeman tried to design everything so it was as simple as possible , but Reeve quickly readjusted the scene . Beeman originally had Welling walk into frame and stand in front of Reeve , and then make a single move behind Reeve . Beeman was told , by Reeve , the scene needed more dynamic between the characters , and if Welling only made a single move , the dynamic would be lost . According to Reeve , " Tom moving around me will hide the fact that I 'm unable to move . " Beeman 's fear of <unk> Reeve 's stamina , because of the added shots to the scene , were put to rest when Reeve himself stated it did not matter how long it took to finish the scene , as long as it turned out great . Reeve was directing Yankee Irving when Smallville was gearing up to film the fourth season opener . As a result , Reeve could not reprise his role as Dr. Swann , which was the intention . 
