See www.CCFulham.com for CMS site with some complex features for event management - I am particularly pleased with the ticketing and Volunteering system - though you can't see this part unless you are a volunteer!
www.Linden-House.org is a straightforward CMS site.
See www.lcsc.org.uk for an old dynamic site
with calendar, member only areas (sorry I can't show them!) where members can
book events upload their own files etc.