The 39-year-old actor stopped by The Ellen DeGeneres Show
-- airing Monday -- when he was actually interviewed by Miley Cyrus, who filled in for DeGeneres
while the comedian was under the weather. Ventimiglia talked about his new family drama, which drew more than 10 million viewers to its debut earlier this month. The series has already scored a full-season pickup
, NBC announced last Tuesday, bringing its total episode count to 18.