When aired on Toon Disney, the scene with Brain using Walt Disney's freezing chamber for defense is left in, but the segment where we see the name on the chamber and Brain's remark about him is cut out.
This cartoon was first aired as part of episode 16. The gag credit for this episode is: Saggittal Suture - jagged line on the top of your skull
The Andy Griffith Show
The soldier guarding the Area 51 entrance is Gomer Pyle saying his trademark "Surprise Surprise Surprise and "Gawwwwwly!" However he was not voiced by Jim Nabors.
The show reporting on the alien crash, 'Lardcopy', is a parody of the news magazine show Hardcopy.
In the beginning of the episode Pinky is watching 'The Z-Files', an obvious parody of popular scifi series The X-Files.
Episode Title: Plan Brain From Outer Space.
The title of this episode is a reference to the Ed Wood film Plan 9 from Outer Space (1959).