Well, I've attempted to retouch a few of the classic posters, since I couldn't find them without either a watermark or any logos, so here goes. My PS skills are still developing, but these might look okay printed up. Do what you'd like with them.

http://img148.imageshack.us/img148/6074/swretouch6rj3bp.th.jpg

http://img37.echo.cx/img37/5401/swretouch6rj.jpg

http://img148.imageshack.us/img148/8477/esbretouch1yp3el.th.jpg

http://img188.echo.cx/img188/6271/esbretouch1yp.jpg

http://img148.imageshack.us/img148/3834/rotjretouch4kz5fm.th.jpg

http://img188.echo.cx/img188/9594/rotjretouch4kz.jpg

http://img148.imageshack.us/img148/606/rotjbretouch8pv4gp.th.jpg

http://img138.echo.cx/img138/289/rotj2retouch2dr.jpg

The first classic Jedi one is horrible, now that I look at it, but shrunk down to DVD case size, the 'photoshop-iness' kind of dissappears.