The Mythbusters are a team that tackle modern myths of all sorts. They do what they can to either prove or disprove the myth. Everything from whether jumping off the floor of a crashing elevator will save your life to whether or not Archimedes actually could have built a death ray.
They are the people your PCs need to go see for building an esoteric Rube Goldberg device. These are the crazy scientists operating in an abandoned warehouse in a Steampunk setting. Adam and Jamie are frustrated wizards trying desperately to make new magical items in your high fantasy setting. Sometimes they succeed and sometimes they fail.
Name: Jamie Hyneman Race: Human
Attributes: Agility d6, Smarts d10, Spirit d8, Strength d6, Vigor d6
Skills: Climbing d6, Fighting d6, Guts d8, Investigation d10, Knowledge (Physics) d10, Knowledge (genre specific science skill) d10, Notice d8, Persuasion d6, Repair d10, Streetwise d8, Survival d10,Throwing d6, Weird Science d8
Charisma: 2; Pace: 6; Parry: 5; Toughness: 5;
Hindrances: Doubting Thomas, Cautious, Quirk (never goes anywhere without his beret)
Edges: Gadgeteer, Mr. Fix-It
Name: Adam Savage Race: Human
Attributes: Agility d6, Smarts d10, Spirit d8, Strength d6, Vigor d6
Skills: Climbing d6, Fighting d6, Guts d8, Investigation d10, Knowledge (Physics) d10, Knowledge (genre specific science skill) d10, Notice d8, Persuasion d6, Repair d10, Streetwise d8, Survival d10,Throwing d6, Weird Science d8
Charisma: 2; Pace: 6; Parry: 5; Toughness: 5;
Hindrances: Doubting Thomas, Cautious, Delusional (believes HIS perception of reality is correct)
Edges: Gadgeteer, Mr. Fix-It
Vulcan Stev's Database 
I like this one. I’m really enjoying this series of posts of yours.
Wandering around your blog and this reminds me of an idea I’ve had for a while. Penn and Teller as Men in Black. Why couldn’t they all be colleagues? They’re all skeptics and de-bunkers as a cover for their operations as agents of Bureau 13 or the MiB. Make The Amazing Randi their Agent Zed.