Wow, I've never had banana ice cream...it must be super delicious!
The nicest ice cream dessert I've ever had was probably Baked Alaska...it was chocolate, strawberry and vanilla ice cream surrounded by hot merangue (sp?) topped with whipped cream and with forest fruit in the middle =P
The contrast of hot and cold was just heavenly...it was probably the most delicious thing I've ever eaten...apart from strawberry soup =D
Ben and Jerrys make an ice cream called baked alaska but its really just a vanilla version of phish food with polar bears instead of fish =P