Learn English – Single word for cast and crew of a movie

All of the -er words are fine examples, but I can't think of any use of them that won't seem awkward.

Why not use "done by", "completed by", "finished by" or a similar construct?

Some phrases that might be related to what you are asking are

• follow the leader
• monkey see, monkey do
• trail blazing or trailblazing
• jump on the bandwagon, also referred to in wikipedia as a form of groupthink (or information cascade as mentioned in previous answer) or herd behavior
• steamrollered, flattened out by a seemingly irresistible force
• mobbed, or being ganged up on

I've also seen pirhana effect and shark attack used in such a context, but from further reading gather that those terms are unfair to pirhanas and sharks.