I'll kick us off with a build that I'm proud of. There's a few people to thank in this one, MillerDave, DBane, Big Dazza and other members who helped me source parts and to the community, a thank you, for helping me learn so much.
1966 Rolex 5513 Submariner with Gilt Underline Dial & Point-Crown-Guards
Genuine Rolex 1570 movement, cleaned, rebuilt with genuine Rolex parts, timed to within 3 seconds a day.
1680 Style (or later) Mid-Case with massive modifications by The Case Whisperer - DBane to make it more appropriate
Genuine Rolex 5512 II.66 stamped case-back with genuine Rolex caseback sticker denoting 5513
Genuine Rolex Tropic 19 plexi-dome
Genuine Rolex 700 crown and tube
Case re-engraved as appropriate by NeckyZips (Joe)
Yuki Dial with beautiful aging and relume done by Big Dazza, gen-spec hands aged by me and relumed by Big Dazza
Genuine Rolex bezel assembly, with aftermarket faded insert by Big Dazza
Rivet style bracelet with correct stampings sourced by StoneP
Genuine 580 end-pieces
Assembled, serviced, and pressure-tested by master watchmaker
I don't even want to remember the $$ or time (nearly 8 months) into this build... but I'm loving it now.