What Blue-Rays?

I bought a Blue-Ray player for $30 at target, benefits of being in the electronic section I get the best deals. I have a love/hate relationship with Blue-Ray Good effects look good and bad effects look horrendous. Now i need to start filling my list what should I get?

Already have. 1 Princess Bride 2 Big Trouble in little China 3 Back to the Future Trilogy 4 Stargate 5 Aliens

Any other must haves? LOTR and Star Wars will be added when they are on sale so skip that please.

Looking for good special features mostly not just good movies and effects.

Thanks Amigos