Third Level In Dinoland:
In dinolands third level there are 6 holes that can get you a hole in one or failure. 
Check the hole by changing view then shoot in the corresponding hole 
1st hole: third slide / 
2nd hole: sixth slide / 
3rd hole: second slide / 
4th hole: fifth slide / 
5th hole: fourth slide / 
6th hole: first slide.

Find Things:
In each area selector [Like spook-o-rama] 
if you run your remote around the side you find a thing that moves, 
click that and you unlock something. Remember this is on all of the levels.