Granted, at best it can be amusing, and when it's not at its best, just plain stupid. Roday not making up his mind to be either Groucho Marx or Soupy Sales doesn't help.
However, Perception did steal Rachael Leigh Cook and give her a role other than that of a nondescript TV dinner tray that they pulled out now and then. Not that I'm a big fan, but her brief "ninja" scene in "Scorched" was memorable.
I guess it is a matter of taste. Besides, ripping off people from THAT long ago is ok with me. I am an older guy (42), and I don't know anything about those guys. Roday is doing a fine job. I love that style of comedy. The Shawn/Gus chemistry is awesome.