The PlayStation 2 and Nintendo Wii versions contain an interesting "conversation test" left in the data, saying:

Testing Testing ONE Two Three
This is a test
Hello Spongebob
Hello Patrick
This is a conversation test
I know
Ohhhhh
I am a little sponge
Shut up spongebob
gosh its like looking at a mirror
shut up shut up shut up
dance dance dance
boogie boogie boogie
I hate my life
Hello Spongebob
I hate my life