Once when I was washing the dishes Mario was lounging on the carpet in the middle of the apartment. Suddenly I heard Boyfriend yell, "Look!" I turned around in time to see Mario 1/4 of the way into a dog-trick "roll over." His little front paws were up in the air and 'round they went. His head just sort of followed along. I guess there are probably rabbits that do this all the time and lounge around on their backs, but Mario isn't one of them so it was pretty cute.
Another great Mario moment happened when Boyfriend asked Mario to binky for him. Actually Boyfriend started pumping his arms up and down in the air and shouted, "Show me your hydraulics!" Mario, as if on cue, popped one foot straight into the air. Chloe used to do straight-up-in-the-air-binkies but these are a lot rarer for Mario.
I finally remembered to get Mario's Christmas decorations up in his cage. I bought these for him and Chloe a few years ago. They are chew-safe. Of course neither of them were interested in chewing them so I took them down when the season was over. Last year Mario finally decided to mutilate the snowman a little (far left).