invisible k1p1 bind off -- I've been dreaming about binding off like this for years, but until today I never knew that it was possible
Stretchy Bind-Off Face-Off by stitchdiva, via Flickr. One I didn't know is the Lacey Bind Off - very close in a stretch contest with Jeny's Super Stretchy Bind Off (JSSBO) -- K2, * Transfer the 2 worked sts to the LH needle, and k2tog tbl, k1* repeat from *.
Invisible bind-off tutorial - AKA tubular bindoff. Perfect timing to find this link, as I am about to do just this on a sweater I'm making!
Stretchy bind off for socks, etc.