Granted, most folks on BZP are probably too young to remember when it first aired in the mid-to-late 1960's (and technically I am, too, but that's the magic of DVD releases), but The Wild Wild West still has the advantages of nostalgia value, a considerable fanbase, the best theme song ever, and an atmosphere of lighthearted drama that already feels a lot like a LEGO theme. Plus there's always a market for trains! The actual project is here. For those requiring further information, I refer you to the Wikipedia page.