The Athens festival not only accepted me, but I won first place in the documentary competition. We did a lot of stuff with the audience there, from sing-alongs to bingo. We actually plan to open our presentation here with a sing-along. We also will be giving away prizes and playing a game of Twenty Questions. By no means should this be nerve-wracking.
People are surprised afterwards at how they feel they have contributed to the meaning of the film.
Also, interaction can provide some very poignant moments.