I have a slight obsession with cacti and succulents. My first cactus was a gift from my employer in Milwaukee - so it's traveled a long way and stayed alive for a long time (over 3 years). It's pretty year round, but I LOVE when it flowers each year.
Not only do I like the way this and other cacti look, but they're hard to kill. Which is good, because sometimes I just forget to water plants for, oh, maybe a month. (I know, that's kind of bad.)