Entourage cast member Jerry Ferrara was the best man at the wedding and Kevin Connolly walked Stuart down the aisle after Dillon shouted "Victory!" (a tribute to his character's work on the metafictional TV series Viking Quest).
The other reason was that the ending of Larry 3 was very definitive and somehow metafictional, since it showed Larry and Patti coming to the Sierra studios to make games based on their adventures, as well as living happily in a mountain cabin in Coarsegold.
1994 - Larry McCaffery and Takayuki Tatsumi, "Towards the Theoretical Frontiers of Fiction: From Metafiction and Cyberpunk through Avant-Pop"