HOW I MET YOUR MOTHER
''Slapsgiving'' Nov 19. (CBS)
First, there's the trademark inside-joke lingo of the episode title, a reference to a ''slap bet'' that awarded Marshall the chance to beat on Barney at the gang's first Thanksgiving dinner together. Then there's the deadpan casting of the 79-year-old Orson Bean as Robin's 41-year-old boyfriend. Add in Ted and Robin's post-breakup hookup (and subsequent heartbreaking conversation), as well as a closing sing-along, and you've got a made-up holiday celebration that rivals any Chrismukkah or Festivus. — Jennifer Armstrong