dvd set with stowaway

I dreamed I was at my boss' house in a garage (his house is actually nothing like it appeared in the dream). I was going through some old junk, and I found a neat dvd box set. The package was a building that opened. Half of the building was Wayne Manor, and the other half was the Daily Planet building. They were scaled for action figure play. Inside were the complete Batman and Superman animated series (the Bruce Timm versions) in slipcased dvd sets. I had to own this somehow. One of my co-workers warned me about something inside the building. A huge black widow spider jumped out and scared me to death.