Annie Hall is one of my favorite movies. I appreciate it for its aesthetics as well as its sentiment. Woody Allen is one of my favorite directors and writers and, though he does have other very funny movies, this is usually considered his best work.
I also think it's a very good example of a radical romance. After I had a particularly bad break-up some time ago and was in some obnoxious state of over-sensitivity, I had to turn off the movie right before Annie and Alvy meet Tony Lacey. I convinced myself that the movie ended with Annie singing "Seems Like Old Times" after her and Alvy have gotten back together. For some reason seeing that Annie and Alvy do not end up together in the end was far too painful for me, and that watching it would mean having to admit to myself that not everything had a happy ending.
To me this is radical. I got over my aversion to the end of the movie and in doing so realized that the characters not ending up together does not necessarily means it is not a happy ending. Annie and Alvy are both content and have both moved on. That's what happens in life. Annie Hall is radical because it shows you what happens in life. In other romantic comedies, the characters always end up together. That doesn't happen in life. My hat's off to Woody Allen for not bullshitting his audience.
The end of the film. Radical in its reality.