Anne Hathaway and Matthew McConaughey are pretty tight these days -- their starring roles in Christopher Nolan's upcoming 'Interstellar' certainly helped seal that up -- which means they're not afraid to get kind of goofy around each other. Hathaway especially.

Hathaway was on hand for last night's 'Tonight Show,' where she shared with host Jimmy Fallon some of the greatest hits of our friendship with McConaughey -- many of which involve abject embarrassment. A major moment? That time that Hathaway and her husband mixed up the date on a party held at McConaughey's house, only to show up at the estate (we assume it's an estate), all ready to whoop it up the day after it ended. It's okay, McConaughey was fine with it -- of course he was!