Has anyone thought about writing a Wicket OLAP viewer using the new (still beta) olap4j API? (http://www.olap4j.org/) I would kill (ok, maim) for something like that and Wicket is a great platform for it IMHO. I have not been very impressed with the Java OLAP pivot tools I have seen, of which JPivot is the best.
Some of the Pentaho developers have put together a proof of concept called Halogen using GWT. http://code.google.com/p/halogen/
