I only have Karma Code and the newest one.  Swamped and I Won't Tell You are my favorite songs.
Yet another reason I think that music game's like Rock Band are great.  They're not only fun to play, but they expose the public to new music.  I had never heard of Lacuna Coil or Paramore before playing their songs on Rock Band.  Now I've gone out and bought their albums.  It's even great for older rock.  I always knew who Megadeth was, but I thought they were a little too hard for my taste.  But after playing a couple of their songs, I realized that they're really a very good hard rock group.  I've bought some of their stuff as well.
Lacuna Coil is touring Europe right now.  Hopefully, they'll come stateside soon.