I baby-talk to mine too. XD Like, "Ooh, hello honey... how are you? Are you good? Yeah?"
I stick my hand in the tank sometimes (washed and rinsed in de-chlorinated water) and they like to sit in my hands and swim around my fingers. I don't do this too often though, maybe once a week.
They all love the finger chase game too.
I make my boy Marmaduke jump for me... if that counts... (he's pretty much my only betta who will jump for food.) I put different objects in front of them so they have something to look at...
and... yeah. XD