If I do give up fabric as unusable, it's usually because of the quality or fiber content. Some stuff just shouldn't go into a quilt.
I've passed along one piece that came in a grab bag of brand new fat quarters because it was so unbelievably ugly I couldn't deal with it. (It was also quilt shop quality and from a current collection, so I mailed it to another quilter who wanted it for one of her own projects.) If I come across any half naked firemen or cowboys in my scraps, they won't go in the baby quilts either. Even chopped up into the itty-bitty pieces Bonnie Hunter recommends, I couldn't in good conscience put those in a baby quilt.
But Shrek's not half bad once he's quilted to a nice top.
What's the most exciting backing fabric you've used lately?
This post is linked to I Gotta Try That, Sew Much Ado, Finish it Up Friday, Can I get a Whoop Whoop?, Get Crafting Friday, Pinworthy Projects, and Freedom Fridays, Wonderful at Home, and Hooking Up With HOH, Inspired Friday.