12. DID YOU KNOW that most Cast members wearing a tie don't know how to tie it?
The ties (at least of the Main Street costumes) are indeed clip-on - they have little paper clip-style contraption at the back. I was certainly very happy to see that, as I can't tie a tie for the life of me - and I'm sure 80% of CMs indeed can't. By the way, at Epcot the ties don't have a metal clip - they have a rubber velcro band that goes around your neck

40. DID YOU KNOW that every tunnel that you ride through on the Disneyland Railroad is in reality a bridge to access backstage areas?
That's just worded badly, but true - the "tunnels" usually lead onto bridges, underneath which there is an access road to some backstage area. The bridge and canyon after Main Street Station don't actually pass through Phantom Manor, but behind it - underneath is quite a substantial access road to all of Main Street West's infrastructure, plus a bit of Frontierland's east site (Lucky Nugget saloon etc.). A similar bridge leads over the access to Adventureland next to POTC.
You can see this very nicely on Google Earth. By the way, when has Google Earth been updated to include ToT and Nemo? The picture's from October 2007 now!