How to do this effect?

Do anyone know how to do the effect that happens around 1:27.

In Final Cut Pro there is a filter called Trails which is customizable. Check it out.
The other way would be rebuilding it with multiple clips in offset on top each other using blend modes.

Thanks for the help. When you say blend modes, can you give me a little more detail please.

OK, asking what Blend Modes are means you may simply need to do a training program. macProVideo.com has a very extensive collection of training. Probably the largest online for FCP X and Motion 5. Ripple Training has great training courses also.

But to the question, Blend Modes (Composite Modes) can be accessed in the Inspector, in the Video tab, in the Compositing section at the bottom.

Motion has some Time filters that do this really quick and easily, too. Echo, Trails, or WideTime.

hptboy41 wrote: Thanks for the help. When you say blend modes, can you give me a little more detail please.

You can also find more information at Wikipedia Blend modes
Don't forget the manual for Final Cut Pro X.