Finding your regular old pool table a little boring? Perhaps it needs some flames. Not real ones, but animated flames that are projected onto its playing surface and follow the balls as they move. If you're not a pyromaniac, you could instead go for an effect where the balls appear to ripple water as they roll across the felt, or one where they displace liquid to reveal an image of your choice that's hidden underneath. If this sounds like your kind of thing, then you might be interested in Obscura Digital's CueLight Interactive Pool Table System.