As it's not far away from my place, there are some beautiful mountain passes:
The old San Gottardo Pass in Switzerland
The Furka and Susten Pass with it's Glacier
I made a video when i went their with my friends. So you can get a clue how it looks while riding those roads:
There are so many roads in this world i'd like to ride... i hope i've got enough time to see as many as possible.
@taxfree4: You got quite a great collection!