Most speakers approach their presentation as if they were the star actors in a theater play. They decide on the content, rehearse, and then deliver their impeccably prepared speech.
Giving a presentation however is different from playing Hamlet. When watching a play, or a dance show, the audience wants to be entertained and emotionally engaged. When attending a presentation, the audience expects to hear a relevant message and bring home something of value. They will evaluate the speaker based on whether he or she can convey information that they can understand, digest, remember, and utilize.