Planning Mystery Library Theater Event.

Hey since I have a general license to show movies publicly at my local library I am have been doing a series of "Mystery Library Theater" events where we show bad movies and the audience gets to make fun of them.   For the end of Febuary someone suggested Mac and Me and it got voted in.  We do have the public viewing license for that movie.  Does anyone have any suggestions how I can make the best of this situation?  I figure people on these forums would have some ideas.  For this specific movie should we try to prepare more or is this movie so bad that we can just watch it and make off the cuff remarks?  Thanks.