ABC TV’s “Extreme Makeover: Home Edition” has attracted a fair number of celebrity supporters and cameos, in addition to the skill, enthusiasm, and energy of the local builders, designers, craftspeople, and suppliers who do the actual building, designing, and supplying. And with the airing of this Sunday’s episode of the show, we can add Oak Ridge National Laboratory researcher Jeff Christian, Energy Secretary Steven Chu, Labor Secretary Hilda Solis, and Education Secretary Arne Duncan to the list of big shots who have put time into “Makeover” builds.

Christian had traveled to Washington, D.C., to provide technical assistance to the team of designers and builders working on the two projects – makeovers of a home and a community center – profiled in Sunday’s two-hour episode. Both projects feature energy efficient construction.

“I offered suggestions to the segment director and to the builders in an effort to achieve as near zero energy design as we could,” Christian, a researcher in ORNL’s Energy and Transportation Science Division, said in a Department of Energy press release.

Off camera, Christian also briefed Chu, Solis, and Duncan about the technologies used in the construction of the buildings, and the three were later filmed touring the sites, which, based on the preview clips streaming on the “Makeover” website, appear to be located in Hyattsville, Maryland. Screenwriter/director Tyler Perry also is featured prominently on camera in this episode.

No word yet on whether tour by the three secretaries made it into the final edit.