Apart from transition effect there's still one technique that can be used to make a slides show lookedcool. It is layer efftecs which user can apply to each of their slides.

Step 1

Install and run Incrediflash Xtreme from here

Step 2

Create New Project and choose Blank Project.

Step 3

Choose Dimension to 500 x 282 pixels

Step 4

Click Add Scene button

And choose Insert Scenes From Images. You can download this lesson's materials from
scene1.jpg,scene2.jpg,scene3.jpg,scene4.jpg,scene5.jpg,

Step 5

Apply any transition effect for each scene. You may skip this step if you just want tofocus on layer effect application.

Step 6

Apply layer effect for each scene by clicking on "Insert a layer effect" tool as shown below

Step 7

For each scene, apply the following layer effect successively:

Old Movie Scratch Horizontal

Arrow

Moving Lines Horizontal,

Vertical Rounded,

Random Square

Step 8

Now you have your slides show decorated using layer effect.

Here is the result: