I'm going to have to go with the "Tekken" series.I find the character movements and how realistic their given martial art of choice moves are.I love the awesome background graphics such as the way Namco used Kodak in "Tekken III" to produce wonderful sunsets,etc. I'm not sure if Kodak was used...
I'd love to see something like Virtua Fighter vs Dead or Alive or a new Fighters Megamix
What would you all like to see? Doesn't have to be a fighter. :)
Edit: Love to see something like KOF: Maximum Impact vs Tekken :D