Quilt Bug has several autumn and Halloween patterns available for sale and download...they're all very very cool! I love the Bat Magic one. Check out the wonderful Halloween and autumn patterns by clicking HERE!
There Goes the Block has a HUGE selection of free Halloween and autumn inspired patterns, and she's done a fabulous job of categorizing them. Seriously, you could spend an hour or more going through these. Visit the free pattern thread by clicking HERE!
BOM Quilts has collected free Block of the Month style Halloween projects put them in one place. See them HERE!