Bonus level:
Enter QSDZ as a password to play in the LucasArts offices.

Level	Password
5	CYZQ
9	QBRX
13	PCFD
17	ZMLN
21	VQBB
25	QLNK
Bonus	RLNW
29	DNKJ
33	PDHZ
37	BKVR
41	BZPM
45	BNYZ
100	JSYE
Bonus	BCDF