The Thrilling Adventure Hour

This L.A.–based, live radio–style show features a cast of regulars (known as the WorkJuice Players) and all kinds of nerdgasm-inducing guest stars. The show hits Chicago for C2E2 weekend with core cast members Hal Lublin, Craig Cackowski, Marc Evan Jackson and Mark Gagliardi and a roster of guests including Castle's Molly Quinn, Boy Meets World's Rider Strong, 30 Rock's Scott Adsit, Supernatural's Richard Speight Jr., Legend of Korra voice actor Janet Varney, Psych's Timothy Omundson and MST3K's Kevin Murphy and Bill Corbett. Use the discount code "sparkschicago" for 20% off tickets. (Though the performance is affiliated with C2E2, it's open to the general public—no convention badges required.)