Maniac Mansion contained a chainsaw that was useless because it had no gas. Zak McKracken had chainsaw gas, but no chainsaw. In Thimbleweed Park, the reunion finally happens.
Game:
Thimbleweed Park
"Behind Jaggi Lines" was the working title of "Rescue on Fractalus" the very first game developed by Lucasfilm Games.
Game:
Thimbleweed Park
"Tuna head" is an insult used in Maniac Mansion. "Crockford" is likely a reference to Douglas Crockford of Lucasfilm Games, who suggested Maniac Mansion's package slogan and helped with the game's Nintendo conversion.
Game:
Thimbleweed Park