Pretty good list man, I enjoy all of those as well. Mine is:
1. Touch of Evil
2. Citizen Kane
3. Dr Strangelove, or How I learned to Stop Worrying and Love the Bomb
4.Oldboy
5. M
Most of these are old as sin and probably boring as hell by most people's standards, buy hey, far as I'm concerned they don't make films like they used to. I could list a bunch of honorable mentions, but I fell like bing lazy.

Also, the lack of horror flicks is due to the fact that that is a whole other list for me, I couldn't possibly just pick one of my favorites without feeling like I left something out.