I am so pleased to read all of your posts, I thought I was the only weird one because I sit for hrs sometime just watching my BETTA.
Mine also know the food container, when I walk into the room they always swim to the front of the tank and watch me, if I kneel in front of them they stare back at me staring at them Lol
I must say mine all have the same little quirk, I am not sure if it normal or not, but they all do this.
If I put bubbles in, like an air stone, they swim and roll and do all sorts of stupid things through these bubbles.
With just the filters running making a water fall on the top of the tank, they get under the water fall and let themselves be swooshed down and around, they keep going back for more until they are worn out, then they just float and rest.
Mine hate the net, if they see the net for catching them they cower and try to hide, they swim around my hands as well, so if at any time I need to move them I just cup them in my hand and lift them into wherever I am moving them; they don't panic and try to get away, they just let me pick them up, I am very gentle when handling them.
The playing in the bubbles amuses me no end.