Obviously, the entire idea of picking the 10, 20, 50, or -- as Rolling Stone recently did -- 100 "best" Beatles songs is not simply an exercise in futility, it is as stupid as every other "top" list that has been generated by radio stations, TV stations, and magazines. Even if the primary criterion is not sheer "popularity" (as with many of these types of lists), there are still quite a number of factors to consider. Are we talking about historic importance? The influence a song had? Songwriting? Musicianship?
Giving some serious thought to this, I decided to do the "stupid" thing and compile my own top 50 list of Beatles songs, based on a variety (or combination) of these various criteria. However, rather than rank the songs (probably the stupidest aspect of creating this kind of stupid list), I provide them alphabetically, with my comments on why each was chosen.