Found this great thread today, love the artwork. For anyone living in Sweden reading this, I recommend poster printing with crimson.se, they charge 25kr (~€2.50) for high quality 30x40 prints. Larger sizes are also great priced. (I'm not affiliated, just a happy customer)...
Now, almost on topic (since the thread is named "LucasArts Posters"). I made a poster with covers of almost every LucasArts and Sierra adventure game ever released as a gift to my brother a while back. Maybe some of you will like it. I can post it in high res if anyone is interested: