At some point in their lives, most people have the "unprepared" dream. That's the one where you show up for the interview naked, can't tie your own shoelaces, or begin the presentation for the boss only to realize you don't have a clue what it's about. Sounds more like a nightmare than a dream, but Speechless takes this concept and turns it into entertainment. Part of the San Francisco Improv Festival, Speechless was created by local comedian Sammy Wegent, and produced by the team behind Mortified SF (tell your most embarrassing memories from childhood) and The Freeze (improv meets hip-hop). It invites a few brave entertainers on stage, with only a microphone and a PowerPoint slideshow loaded with random images. A wheel is spun to choose the topic — it could be a TED talk, an app launch, or even a wedding toast — and then it's go time. The presentations will be unscripted, but the shoelaces will be tied.