They're not practical YET, but the 3D printed dress...we're clearly getting closer and closer to Rodenberry's replicators.
http://www.youtube.com/watch?v=wdRswasftfI&sns=em
http://www.youtube.com/watch?v=wdRswasftfI&sns=em

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.