A new season of ATHF starts tomorrow night/Monday morning at midnight. It should be continuing the show's HD run that began last season.
The last new episode of American Dad on Adult Swim unfortunately did not air in HD, only stretched letterbox, but there is another chance this Friday, at 11:30PM when the next new episode of the series airs.Fullmetal Alchemist: Brotherhood starts on 2/14 at midnight
. It should hopefully be in HD (Adult Swim's first ongoing anime series to be as such).