Butter Dish, Cherry Cheeks, Chili Spice, and Eggplant Electricity I bought for both the look and the names. Don't know why, but I like food-related names.
Rocket City I bought solely for the name, being a fan of Team Rocket from Pokemon. Makes me think of a city of Team Rocket agents.
Ferengi Gold I also bought for the name, and to replace my daylily Starstruck that died this winter (they look basically the same, although FG is yellow instead of gold). I'm a big Star Trek fan so I'll be keeping my eyes out for more cheap Star Trek-themed daylilies next year.