don't listen to those 2 dead ringers, they conspire together.
Spies Like Us, starring Frisky and Kotah. hehe
the slow-motion and such is always nice for that nostalgic, 'most memorable moments of...' kind of feel
effects are a good thing too, dont listen to frisky.

only thing i might suggest is easing the effects in and out more, so theyre less abrupt at times maybe. (after effects: easy ease keyframes, slow the motion of the effect for the start or end 10-20% of the transition maybe)
maybe fading the opacity in and out a little at the start and end of them as well, or the playback speed if possible... like 25% speed at the start of the effect transition, and upon completion the clip plays at 75%... would probably be a pain to do with the source demoui but, would look rather giggity if accomplished.
sorry if that's a little vague or confusing, my memory of AE and such is a bit hazy.
not a bad little video. look forward to seeing more.