Dark Star Easter Egg - Dark Star - Wreckage Reveals Egg!

Towards the end of the film, the ship explodes sending the two astronauts who were trying to talk the bomb down hurtling in differnt directions. Clearly doomed, they are able to talk to each other for a few brief moments before losing contact.
Talby is taken by the Pheonix Asteroids and fades away, while some wreckage from the ship drifts by Doolitlle. Look very closely at the door that drifts by him. It says: "Toilet Tank: THX 1138"
THX 1138 was the title of George Lucas' first movie, an expansion of a student short he made while at USC.
John Carpenter shared a class with Lucas, and Dark Star is a similar student short expanded to feature length.
I get the impression he was less than impressed with THX, don't you?