By now, everyone knows that Clint Eastwood inadvertently spurred one of the Republican National Convention's greatest memes last week, "Invisible Obama." But the veteran director's loopy, chair-accompanied presentation isn't the first bizarre celebrity speech to hit the public. Check out our slideshow of some other behind-the-podium talks gone wrong, from Anna Nicole Smith's "Do you like my body" to what could possibly be the worst celebrity commencement speech ever.

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  • Richard T. Jones

    The problem with winging it, as "Why Did I Get Married" actor Richard T. Jones unfortunately discovered, is that it can go horribly wrong. Jones' improvised commencement speech for University of Maryland University College starts out promising enough, but quickly tanks after too many uh-I-don't-know-what-to-say-now pauses. (Video starts around 3:00).

  • Clint Eastwood

    Two words: "Invisible Obama"

  • Anna Nicole Smith

    "Do you like my body?" the Playboy playmate unforgettably shouted at the crowds.

  • Mariah Carey

    "Please forgive me, because I'm a little bit, um ..." Mariah Carey may have hit the bubbly a bit too hard in preparation for her acceptance speech at the <a href="" target="_hplink">Palm Springs Awards</a> in 2010. Bonus: the rambling pre-show interview.

  • Kim Delaney

    In 2011, the "Army Wives" star had to be escorted off stage after giving an incoherent talk at the Philadelphia's National Constitution Center about serving in the military for five years. Or something.

  • Joan Rivers

    The Queen of Comedy was hysterical at an Australian awards show, and caused the room to laugh right along with her.

  • Kanye West, Taylor Swift

    Who could forget Kanye West's infamous "Imma let you finish" protest during Taylor Swift's acceptance speech for Best Female Video at the 2009 VMAs?