By this point, Bill Willingham's creation is getting close to its 100th issue and I am eagerly awaiting the 13th trade. It has spawned a spinoff series co-written by Willingham and Matthew Sturges, Jack of Fables (which has just seen its 6th collection published), an original graphic novel, a prose novel (still sitting on my shelves waiting to be read), and now a mini-series starring Cinderella (and written by Shooflypie-approved Chris Roberson).
Why has it stuck around so long and proven to be so popular? The characters. The cool ideas. The stories. Mark Buckingham's art. James Jean on covers for years. It has been to Vertigo in the 2000s as Sandman was in the 90s...that's no small feat. It's a great comic.