mushrooms, zooanthids, star polyps (in pinkish brown and green varieties, I love these critters), bubble coral, galaxy coral, xenia, several varieties of tree coral (such as colt)...
A few species of brain coral are low light lovers, I believe that you're looking for wellsophyllia and trachyphyllia... but don't quote me on that. Also, blastomussa wellsi and merletti (these are commonly referred to as pineapple coral because their polyps look kind of like pineapple slices pasted over a ham) can do well under pc's
Xenia... is cool to watch. It pulses. All your non-reefkeeping friends will love it. Most reefkeepers will tell you it's a weed because it splits on almost a weekly basis. We bought a colony for our nano about four months ago, and now have approximately 15 colonies. But... it's so fascinating to watch that it's better than most things on tv.
Tubestrea and the dendron... (i forget how you spell it now) are not species I would recommend. Tubestrea require target feeding at least four times a week because they don't photosynthesize at all, and this gets tedious over time. The others just die in our tanks and should be left in the oceans.
Also avoid gonipora or "flower pot" coral for this same reason. It's beautiful, but it doesn't live. I have been tempted by these corals myself in the past, but avoided them in favor of hardier animals that I know will survive in my tank and be forgiving if I make a mistake or two.
Hope these suggestions can get you started on looking into species that you want to put in your tank. I also suggest that you thoroughly research the animals you want to keep for yourself. Do not trust to the advice of your LFS, know what you are putting in your tank and how to take care of it. This is key to success in reefkeeping.
Good luck and welcome to this absolutely fascinating hobby,
J.