While I do enjoy RE6 mercs way more, RE4 just has that special something. Perhaps I'm a bit biased because it's my favourite game of all time, but hey, it was many others favourite game as well. RE4 still plays well even today.
For RE? Code Veronica or Remake. For ANY GAME EVER? Earthworm Jim Special Edition or Earthworm Jim 2 Special Edition.
Both of those are great games. I never played any Earthworm Jim games. Non RE games I love Burnout Revenge. It's my fave racing game. I also love the first Resistance Fall of Man which I still play online. Lots of people still there.
racing + making your competitors explode = WIN
I prefer takedown over revenge.
Better tracks, and more vibrant colors, Revenge suffered from early gen "everything must be brown" syndrome.