I just finished this scarf using Brown Sheep yarn LanaLoft in a sport weight. It's a variegated yarn, so the lights and darks help accentuate the squares of the knitting pattern.
Entrelac is a method where an entire square is knit in one direction, then the work turns and a square is knit in another direction.
This particular scarf has a bouncy texture because what was supposed to be squares turned out to be rectangles because of the size of the yarn. The edges ripple and make for a ruffled look.