We also learned loads from Winslet about the making of the film after Colbert threw some rapid fire questions at her but think the main takeaway here has to be how Kate Winslet's mounting of the desk. She literally threw herself onto that thing like her life depended on it.
Unfortunately, the reason Winslet was on 'The Late Show with Stephen Colbert' was to promote her latest film, Woody Allen's 'Wonder Wheel', but if you can get past all that (which is hard) and concentrate on Winslet's candor as she appeases Colbert's dissatisfaction with the ending to 'Titanic' by creating a new ending with Stephen playing Jack, you'll have a good time.
Also, Matthew McConaughey was almost Jack? That would have been a very different movie.