vonmolkew
Explorer
Apart from minis, I would also point out that the Dungeon Tiles, 4E branded, are quite nice and if you are so inclined, multiple packs of those will find a use at any gamer's table.
Definitely the Dungeon Tiles. I also got a copy of the Monster Vault. It has a ton of monster counters in it that serve to replace miniatures.....over 200 of them. The book inside would be of no use, so if you can find it cheap somewhere (like a Borders that is closing), it might be worth it.