The charming Sienna Miller drops by NYC’s Ed Sullivan Theater on Thursday afternoon to tape her appearance on The Late Show with David Letterman. Sienna, 25, gets made fun of for accidentally saying “****ing Hell!” on The Today Show when she thought she was on a commercial break.

Sienna and Dave play off each other very well and by the end of Sienna’s interview, Dave winds up dropping the F-bomb himself! Watch Sienna Miller on David Letterman below!

Michael Richards was truly hilarious on last night’s The Late Show with David Letterman. The poor guy was trying to apologize while the audience was busting a nut. It got so bad, Jerry Seinfeld had to step in and tell the audience to stop laughing! Watch the funny, funny video below…

If you missed Kramer’s (Michael Richards) racist stand-up act (Seinfeld theme included), check it out here.

Fergie performed “London Bridge” during last night’s The Late Show With David Letterman at the Ed Sullivan Theater in New York City. Somebody send in the video! Meanwhile, check out the video below of Fergie posing for a photoshoot for Japanese fashion magazine, SCawaii. Fergie was joined Japanese pop singer Koda Kumi and does a little interview with her. More pictures in the gallery!

UPDATE :: Watch Fergie perform on David Letterman