One of those actors was Gary Valentine who was "Doug's" cousin "Danny" on King of Queens. Gary Valentine is even related to Kevin James as well! In fact, the two are brothers. And when you see them together you can certainly see the resemblance. Up until the fourth season, Gary was only seen occasionally in individual episodes. In the fifth season, "Danny" was much more of a feature and later worked in the same company with "Doug".
Watch the video above to learn more!