When Kitty is talking with the kids in the kitchen she slams the silverware drawer and the entire counter slides out of place.
Hyde says that Kelso cheated on Jackie with Pam Macy, Laurie and Annette. Kelso, indeed, cheated on Jackie with Pam Macy and Laurie. But, since he met and dated Annette *after* he broke up with Jackie, he did not cheat on her with Annette.