Time is Money by Asi Wind
Effect: You take out a bill and ask a bill from a spectator which they sign. You then unfold the two bills and one bill, the spectators signed bill, has vanished only to appear under the spectator's watch.
Price: $34.95
http://www.hanklee.org/xcart/product.php?productid=8259Teaching: Asi has a elegant style of teaching. The method itself blows my mind. You get a performer's POV of teaching and multiple live performances and nice variations.
The bonus' are amazing. There is one where 2 1's visually morph into a 2 dollar bill.
Difficulty: 4/5 In my opinion a effect where something appears under a spectators watch is leading to as ballsy as you can get with an effect. The most ballsy being actually taking off the watch. Which Asi, shows can be done. The setup takes a knack and a bit of rewinding but once you have that down you have a miracle to anyone that has a watch on

just carry a bill in your wallet and you are set.
Applications: This is a great effect for any situation. Could be stage or strolling. I do coin under watch a ton and Asi Wind's Time is Money is a great new "something under watch" routine.
Overall Rating: 10/10 This is impromptu magic at it's finest. You need to have confidence to pull a ballsy maneuver but once you're used to it like I am, You gotta miracle!