I like tropicals/subtropicals. I really like Serissa (I have 4 currently and a bunch of cuttings that will give me more to work with in the future;-) and I also have 2 Ficus, a Jade, a Schefflera, and a Japanese Evergreen Holly. There are a few other species I'm hoping to pick up when I go to Nature's Way in October. I keep them all outside during the warmer months but bring them in over the winter. I've attached a pic of one of my Serissa (trained for about 1 year and about 10 inches tall including the pot).
It's just a little guy but it should get nicer as it gets older.