From my serious category:
The Godfather, Casino, Lost in Translation as well numerous festival-films (non-popular category)
From my scary category:
The Blair Witch Project, The Ring
From my funny category:
The Whole Nine Yards, The Groundhog Day, Office Space
From my documentary category:
Startup.com (so far), although I do not watch many of them. Every documentary has something real in it and its a great thing. 11.09.2001 is a great documentary as well.
From my comedy TV-series category:
Alf, Friends, According to Jim
From my other TV-series category:
X-Files, Las Vegas, Curb Your Enthusiasm and, of course, The Mind of the Marries Man (bible for men).