A huge interest of mine so here's my spiel.
Currently, I ride a hand-built touring-inspired frame made from an assortment of 1970's Cinelli/Columbus tubing and lugs (used bronze and silver flux). Since Campy Record parts from that period are more expensive than they are worth, I threw on a SRAM Rival crankset and rear cassette with some old Tiagra shifters and derailleurs. Who says you can't mix and match? Wheels are from Sunshine Hub (they were just collecting dust) as was the saddle (a Fizik). Front and rear racks are custom-made for that bike specifically and serve their purpose.
If you are really interested in the build quality of old parts, just try heating a Cinelli bottom bracket shell (took roughly 5 minutes at 1000+ F).
This was my first build and certainly won't be the last.
Also, here is my dad's current ride. Another hand-built deal. He likes to cook and had the brilliant idea of joining the two together. He often rides around our area and others doing demonstrations and the like.
I also have a few other frames collecting dust:
2006 Lemond with 105 Groupset
1990s Bontrager Mountain Bike
2000s Fuji Newest
Custom "Pigarello" - Old Tandem frame modified with a 2.5' rear rack for BBQ delivery
Custom Recumbent Tandem (nicknamed "Red Green" after the show)
3 Custom Recumbents
Old Frames (Reynolds, Columbus, Custom Fiberglass)
Cool stuff:
Got to see the end of the Tour de France in 2012.
Crazy front chainring Stage FinishChris Horner sighting!