I just added four bass shakers which I should have done years ago. They are awesome. Is there any other things that I may not know about in terms of sensory type effects. I have a 7.8.6 system and at times it feels like a wind tunnel from the bass but is there anything else? I have programmed different smells to go off at different times during movies using timed relays. I have also built an interactive greeter which talks to guests when they arrive with a ton of sayings and wishes them well as they leave. I love to implement these into my theater to make a surreal experience unlike any others.