The art behind Angela is taken from Diego Rivera's mural from the Detroit Institute of Arts.
When Sweets asked Mr. Wilson if he bought historical artifacts, he showed some pictures. One was the Willendorf Venus, a 11.1 cm tall (4.4 in) Venus figurine about 30,000 BCE. It was found in Willendorf, Austria and is now in the Naturhistorisches Museum in Vienna, Austria.
Gary Grubbs also appeared on Angel with David Boreanaz. Gary played the father of main cast member Winifred "Fred" Burkle (portrayed by Amy Acker).