Since I found this thread we've been making lots of banana ice cream. Here's some of the variations we've tried.

My favorite is chocolate. Since I gave up sugar, this is the only way I get chocolate (except on my "treat" days). I use 1 teaspoon cocoa powder, 1/2 tsp Mexican vanilla (1 tsp regular vanilla would work, I just don't have any on hand), and 4 bananas. Actually I've done the same with 2 bananas and it comes out fine.

I invented one today that I REALLY REALLY like. LIKE like. I added 3 tablespoons orange juice concentrate to 3 bananas. Everyone else in the house thinks the orange juice is too strong, so I recommend using 1 tablespoon and increasing it by 1 teaspoon at a time to taste.

We did another that was 4 bananas plus lime juice from one lime.

And we've added other fruit, peaches and strawberries. I made one that was half banana and half peaches, the only problem was the peaches should have been cut up smaller. Strawberries worked pretty well but you need to thaw them slightly--not too much-- or they don't blend with everything.