ive been on a pluot kick lately - they are kind of like a cross b/t a plum and a grape. its hard to find good ones though. mangos are my favorite. hoover's in austin makes a kick-ass mango homemade cobbler (blackberry cobbler too). mmm...
Pluots are actually a cross between a plum and an apricot. My favorites are: pluots, pomegranates, and nectarines. I like my fruit with a little kick. I probably eat more Ruby Red Grapefruits than anything, though.
I don't have just one, but : Dates Mangos Pineapple ... and an odd hybrid I found out about just this summer called a "Pluot" - a cross between a plum and apricot that pretty much tastes like a plum.