ABC will broadcast two Valentine's Day-themed specials on Saturday, February 9, 2013. Be My Valentine, Charlie Brown and A Charlie Brown Valentine will air back-to-back from 8 - 9 PM (Eastern/Pacific time).
In 1975's Be My Valentine, Charlie Brown, Charlie Brown hopes for Valentine's cards at the school Valentine's Day party while Linus worries about how to show his affection for his teacher, Miss Othmar.
Then in A Charlie Brown Valentine (2002), Charlie Brown tries to impress the little red-haired girl, but instead Peppermint Patty asks him to a Valentine's Day dance.
Update: if you missed the shows on TV, you can watch them on-line at on hulu.com or ABC.com .