Where I live they're presently showing Andy Griffith all day long for fifty days I believe it is. I really can't remember a real favorite, but I have always favored skits with some of their regulars. I get a kick out of Barnie, Floyd, Otis, Ernestine Bass, and just so many more; I think all of their characters presented a wholesome look at America.
There are too many favorites to eliminate any of them but one bit comes to mind many times and that is where Barney is giving Otis a sobriety test and has him hopping on one foot and then the other until Barney tires out first. It was then that Andy and Barney was to go somewhere like the courthouse or whatever and Andy starts hopping out the door on one foot and tells Barney to "Come on, let's hop on over there" or something like that, and then you get that look from Barney.
I always enjoy scenes where Barney has his hair all messed up, and I remember "Citizen's arrest" and I reckon if I sit here for awhile near all the episodes would come to mind. My wife and I watch them over and over, and It's too bad there are not new shows like that produced today.