Scenario Creators Pack 2.5, by AOE inc Master, is a utility that shows two different tricks. Both are neat, but need some editing.
The first is an exhibition of a transport/train system. It was ok, but was a bit too slow. Perhaps you could have made the rams belong to a Mongol? (Drill, for those who don't know.) The automatic transportation system was neater, but a change view trigger would have been nice.
The second is an exhibition of a cannon. It was a good idea, but again, it takes too slow to develop. A cannonball doesn't move that slow. :p
Also, I must deduct a half-point for failing to explain the trick beyond "look at the triggers."
Overall, it's a good utility. Download it if you need some ideas.