This is alluded to in the rulesheet based upon the below:
I've observed that when you hit a spider it shows up on the screen and gives a spider value... if you hit it again it increases the spider value. Same for Kilowatts (from hitting QED) and Transits (from hitting one or both ramps - don't know which). I've seen Transits collected at the theater. I'd GUESS you also have to hit the theater to collect spiders and kilowatts.
The other thing I noticed is that say you hit a spider... if you hit a kilowatt or transit before collecting then it switches to that... so I think after hitting the spider you have to collect at theater before hitting a ramp or QED!!! (Unless maybe you can use the flippers to cycle through what is lit for collect at the theater...) In the end... a lot of guessing without verification so far.
From the Manual:
After collecting 3 spiders you will get the "Spider Spinner" feature. [I have no clue what that is but would guess a high scoring spinner for a certain amount of time.]
After collecting 3 Kilowatts you will get the "Kilowatt Drops" feature. [I have no clue what this is.]
After collecting 3 Transits you will get the "Train Bash" feature. [This was in the 3 hour video: During Train Bash you must hit the door (image in theater) to collect a transit bonus. (I think 3 hits are required to collect the bonus and then you've bashed open the door and get the chance to bash a new door... probably times out).]