Sadly, Minecraft players on the Xbox 360 don't have access to the countless mods and texture packs available on the PC version. Well, now there's at least one interesting pack available, for $US3.99. Seems a bit steep for some new textures, skins, and a small map, but I suppose it's better than not playing Minecraft as Commander Shepard.
Minecraft: Mass Effect Edition is available now on the Xbox Live Marketplace for $US3.99, and there's a free trial as well.
Oops: In the video, I said it was the mission where you meet Mordin, but it's actually the mission where you meet Liara. Sorry!