I'm not very athletic, but there are a few exercises that I like.
Volleyball: I found that I was actually pretty good at this in high school. Sadly, I don't ever get to play it.
Swimming: I have always felt comfortable in the water, and love the fluidity of the movements. But, again, I have no place to swim.
Dancing: I'm very uncoordinated, but it's fun.
Pilates: Though I lack flexibility, I love the feeling I get afterward, when my muscles are all stretched and warm.
Hiking: I love nature, and it's fun to do this as a group activity. Of course, I don't get to do this a lot.
Hula Hooping: It's fun to do this to good music, but I can't really keep the hoop up. lol.
And I'm sure there are more.