Well, I just spent countless hours updating the master schedule of challenges on Two Peas and creating an alphabetical listing of the challenges, complete with descriptions, for newbies.
I love a scrapbooking challenge, and almost all my layouts begin with challenges as a starting point. It's fun to combine them to see what I can come up with. I think the challenges really help me to get started because I have way too much stuff, and having a guideline of what to use gives me a good place to start.
I've started a bunch of challenges on Two Peas (and I keep getting more ideas, but for now, I'm restraining myself!):
Low-Stress, Use Your Stash Challenge
Scrap Your Childhood Challenge
Extreme Makeover Challenge
Use Your Monthly Kit Challenge
101 Things You Can Do... Challenge
Scrapbook Play Challenge
And I'm a part of some challenge blog teams:
How Much Is Too Much?
Double-Dog Dare Ya! (soon to be launched)
I guess you could say I'm obsessed with challenges!