Right now I'm playing an outdoorsy, outgoing and self-assured sim, he's pretty fun to play. He's married to a romantic, outgoing vegetarian so between the two of them they have a lot more friends than I am used to (I never usually socialize, but I wanted to try something a little different with them).
I've had the neat, perfectionist and creative combo before which was fun.
Athletic, loves the outdoors and loner got pretty interesting. He turned into a bit of a "hermit living off the land" type.
I'm not usually very adventurous when it comes to my traits. I'm sure there are at least ten that I've never played with before, especially the negative ones that I find more annoying than anything.