My favorite instrumental Zappa song 'Peaches En Regalia"[0] really captures his style I think for those who haven't heard him. My favorite song of his has to be Montana[1] or Titties and Beer[2] both capture his humor.
Can't really pick a favorite, the entire Hot Rats album is a guitar masterwork. Apostrophe is also a standout track (and album! and double album!) in my mind:
I agree, but I also have to add Muffin Man[0] to the list for those who might know Frank. My two best friends passed away one recently, one a few years ago. In school we bonded over Frank Zappa (I'm 27 by the way). His music will always hold a special place in my heart for me.
Edit: Another reason Frank is my hero, Him and George Carlin are the reason that they put those 'Parental Warning' labels on albums. Here is video of him on crossfire defending his right to free speech[1].
[0]https://www.youtube.com/watch?v=RGQxI0G6mKk
[1]https://www.youtube.com/watch?v=smZA9Jv3qH0
[2]https://www.youtube.com/watch?v=zvepB7uYoAo