I still don't like to do it, though. ;-) I DESPISE cardio! Love weights, though, so that's a lifesaver.
I think the biggest motivator for me has been that I write my gym "appointments" into my day planner. It makes it a real priority and I find it harder to talk myself out of going if it's written there in black and white. I also bought some jeans in size 10 when I hit size 12. I've tried them on every 2 weeks or so and I (usually) get a nice thrill to see how much better they fit. I'm ALMOST there -- I can wear them...but I have to do the old "stretch-those-jeans" squats for awhile before they look alright.
By the way, I like that you have a "Halloween Goal." You've inspired me to come up with something similar (my new birthday goal is below!) Thanks!