The Worldz 3D is really versatile and very cheap (from the store here). I also love the cyclorama coz you can get really reaslistic ground shadows and the people look like they are really in the scene (not just got a background stuck in). Finally, you can use any bitmap for a background using a graphics prog. As Poser saves a mask as an alpha channel it is easy to 'cut' the figure out of the grey Poser background and stick whatever you like behind.