He's a wizard with scenery, putting the twinkle and fog in Dallas Theater Center's annual A Christmas Carol. Bob Lavallee also made the boxy Wyly Theatre into a hot box of writhing bodies for Cabaret and this summer painted that stage with whirling pyramids and psychedelic images from the Old Testament for the musical Joseph and the Amazing Technicolor Dreamcoat. As a production and scenery designer, Lavallee illuminates and expands on the intention of the playwrights' work. When the lights go up on one of his shows, the first thing you hear is the audience saying, "Wow."