Oooog... I think I'm OD-ing on geeky Lego goodness...
People, I think we've hit on the next big thing in D&D...LEGO d20! Think about it...basically a re-hash of the old Castle sets, but the floors all have 1-inch square grids on them, so you can use your lego people as miniatures! Have parts for all the main D&D races (little yellow heads with pointy ears, short legs for gnomes and halflings, etc), and package them as classic d&d settings. I'd buy the Castle Greyhawk set with little Elminster lego-dude. You could do the whole Against The Giants module series with the big technic guys...yeah, I think I'm onto something here. Who's with me!?!
PS Horatio, I think the goblin heads are from one of the Harry Potter sets.