I think Business Process Management, ILM (cradle to grave management and archiving of content), and enterprise-wide content security will all play well in Peoria.
But, Web 2.0 (including wikis), granular-level Web Services, and multi-tenant SaaS options will all likely have a tougher time at the box office.
It's not a matter of whether an idea or technology is good or bad, it's whether it has a chance of success. I think free beer and world peace are pretty solid ideas, but they get don't seem to fly too well in practice.
Clearly I am missing something. I would have thought that Web Services would have seen widespread adoption by now; precisely because it allows companies to glue together otherwise incompatible legacy systems.