Lime i've had before.  A blend or Mandarine is above the small frozen section of my organic market i'm afraid.

My girlfriend is vegan, so that lowers the option for icecream outside of prepackaged.  Though, the vegan place is where i found the awesome Pineapple Icecream.

Which, go for Almond milk over soy if you are going to have vegan icecream/vegan shakes.  At least, that's my opinion.  

Strawberry and Pistachio.

peanut butter and chocolate

pistachio, Walnut and Häagen dasz Mint choclate

Together or seperate?

And is it a creamy Pistachio or one that has little bit of nuts?

Oh, separate. I meant the Pistachio ice cream ^^

But the majority of the time I go with Strawberry. 

Banana ice cream is my all time favorite
Followed closely by chocolate chip cookie dough
Adding some peanut butter is always a good option for either of those flavors.

cookies and cream is also a favorite
Blue Bunny has ice birthday cake ice cream, and it is really good
Dippin' Dots Banana Split is heavenly... oh my gosh it's so good. Can't remember the last time I had it though.

Ive always liked the highly artificial flavoring of bubblegum ice cream.   plus it turns your Shit blue!

Mint chocolate chip is the best flavour, there's not really much to discuss here

Rum and Raisin. Nothing else on this planet comes close.