I will talk a little bit about the groups gathered
and some of the previously successful joint projects
between Code S and T that I know of in my 5 years at ARC.
Not all of these projects were funded, and that is
also part of the story.

Some examples include:

Way (SS) & Srivastava (TI) using Virtual Sensors
on the Photometric Redshift problem in Astrophysics:
http://xxx.lanl.gov/abs/astro-ph/0601145

The collaboration between Robin Morris (RIACS) and Johann Cohen-Tanugi at SLAC
deals with improving the on-board data analysis for GLAST.  See
http://www.riacs.edu/navroot/Research/Projects_detail/Auto.jsp#eventAnalysis

Jeremy Frank's work on SOFIA scheduling is described at
http://is.arc.nasa.gov/AR/tasks/SOFIASchd.html