Jeopardy Labs Game Board from our really hard game show.
Who Want to Be a Winner is even more fun when the lights are out and the disco ball is on.
You can find PowerPoint templates for popular game shows online, like Are You Smarter Than a 5th Grader, Jeopardy, Hollywood Squares, and Who Wants to be a Millionaire. Many of these templates even come with music and sound effects or you can add your own. Download free templates from the PowerPoint Games and Classroom Game Templates pages. If you don't have PowerPoint, there's JeopardyLabs, where you input your questions and play online in your web browser.
Classroom game shows are bound to engage students. They are great when teachers do the hosting, but students could certainly prepare the show and host it. The most time-consuming part is coming up with questions when you are using pre-made templates. Often, students learn the most when they are the ones writing the questions.
Want music? Find great stuff at FreePlay Music. Also, there's Soundsnap.com.