No, Steve Carell isn’t coming back for the final season of “The Office,” but that doesn’t mean the show hasn’t had key players from its creation in America making appearances. Ben Silverman, the exec producer who, as Reveille topper (not to mention future NBC Entertainment head) was instrumental in bringing the format Stateside, has been recurring on the show in recent weeks as one of the guys Jim Halpert (John Krasinski) has been working with on a start-up business.

By the way, I’m still not clear on what exactly Jim’s start-up is designed to do.

Thursday’s “Office” was momentous because for the first time (quit reading here if you haven’t seen the episode but intend to) …