At our last concert we played a really nice arrangement by James Burden called, "Star Wars Medley" (John Williams). It has a nice solo for euphonium toward the end of the piece. It's Princess Leia's theme. When I first played it in rehearsal it wasn't all that good because I pictured Princess Leia in that skimpy costume with Jabba the Hutt and I lost my buzz. If interested here's a snippet of the concert recording:
Star Wars Medley - Princess Leia's Theme: