A new trailer for Capcom's Resident Evil: The Darkside Chronicles was just recently released and it's an on-rails shooter that will play with the Wiimote or Wii Zapper. This new Resident Evil title is also promised to be able to adjust its difficulty on its own, depending on the players skill level.
I was able to play a bit of this game while at E3 and even though I am not a big fan of "rail shooters", this one seemed to give me a little more wandering room than most. I would call it a next-gen action-arcade rail shooter...if that makes any sense.
Look for Resident Evil: The Darkside Chronicles this November.