One stop fun
http://www.onestopfun.com/admin/misc/partywaiver.pdf

Jump on In
http://www.jumponinfun.com/waiver.pdf

Beantown Trapeze School
http://boston.trapezeschool.com/about/waiver_boston.pdf

Pump it Up
http://www.pumpitupparty.com/StoreWaiver.aspx?StoreID=137&PageName=StoreWaiver.aspx

Guard Up
http://www.guardup.net/sword/documents/event_waiver.doc