With SPSRollUp you can aggregate incoming content from various lists. To do this you only have to specify the site from which you want to crawl data, your wish lists and the fields’ names.
Package include SPSRollUpCalendar & SPSRollUpTree.
SPSRollUpCalendar has a similar operation to the SPSRollUp and SPSRollUpChart, and this means that it tracks sites and lists collecting information, the collected data is transformed using XSLT to generate XML as SPSRollUpChart does. The result XML is a description of the events to show in a calendar view.
SPSRollUpTree has a similar operation to the SPSRollUp, and this means that it tracks sites and lists collecting information, but in this case the data use a XML Tree configuration to output the data using a tree view control. The XML configuration define the tree branches and the leaf node. Finally when a leaf node is clicked if the SPSRollUpTree is connected to another webpart it send the selected row of data.
Please visit SPSProfessional website for additional information.