Some American TV series of the 1980's (including quite fondly remembered ones, like Knight Rider) had this strange habit of showing a kind of "teaser" of the contents of the episode at the beginning of the episode. Or at least some of their TV broadcasts did (I think these were cut from or never added to VHS and DVD releases of these series, although there might have been some that did.) This was actually relatively common in many TV series of the time. As far as I remember, this habit was eventually dropped by the 1990's, and almost no TV series used it anymore. However, for some strange reason the habit was caught and rekindled by other types of TV shows, particularly the "reality TV" ones: Indeed, while not all, some of them, even to this day, do the exact same thing: They show a kind of "teaser" of the contents of the episode at the beginning. Whether this is considered ok or annoying depends a lot on the individual viewer, I suppose. For some ...