GOG.com (formerly known as Good Old Games) is giving away The Savage Empire (http://www.gog.com/en/gamecard/worlds_of_ultima_the_savage_empire) and Martian Dreams (http://www.gog.com/en/gamecard/ultima_worlds_of_adventure_2_martian_dreams).
More details here (http://www.gog.com/news/free_releases_worlds_of_ultima_1_2).
Sweet, thanks for the heads up. Quite fancy the savage empire, wonder if it will rival the epic where time stood still.