A word that means a bad copy of lots of other things
Used in this context...
I don't like The Cleveland show because it is ****
It's a term we use in animation to say that we don't like this programme or idea because it is too similar to other ones out there.
Armchair pundits often like to level the accusation of a work being derivative:
- Imitative of the work of another artist, writer, etc., and usually disapproved of for that reason. (ODO)
But beware: that's so overdone that it, itself, has become a cliche.
I would say "knock-off"
http://www.merriam-webster.com/dictionary/knockoff
You could also use "copycat"