Shikigami no Shiro 2 just came out for the Dreamcast in Japan and is available at most of your better online import retailers. I recommend NCSX myself.
It seems to be a decent vertical shooter with 3-D backgrounds but 2-D gameplay. I'll let you know as soon as mine arrives. Soon, I hope.
Evidently, this game came out in Japan already on the Gamecube and PS2, but is now on the Dreamcast. This is a good thing, as the arcade original ran off Naomi/Dreamcast hardware so this port should be the best of all of them.
Anyone know if this is the same game as Mobile Light Force 2 on the PS2? I know the original Mobile Light Force on the PSone was a port of the Japanese game Gunbird, but I'm a bit confused on this one.