Knitting Tutorial – "Corrugated Knitting Tutorial – less elastic than regular knitting, but Oh, What Visual Dynamite! There are many ways to vary this. plus, it's perfect for knitting in the round." comment via KnittingGuru
This decoration for knitted projects looks like Latvian knitting, but is really just crocheted slip stitches made into a knitted foundation. Easy to do and is a very effective way to add design interest to your knitting.