And looks like i have found replays of what you were talking about:
It'S DIMAGA vs Fraer from some kind of showmatch two weeks ago.
http://drop.sC/234684 - Here DIMAGA cuts drones on ~40-43, builds a bunch of lings and defends against blink-stalkers.
http://drop.sC/234683 - same stuff - DIMAGA successfully fend off all stargate/gateway units attacks by building drones and units simultaneously.
And Here is just EXACTLY What your post was about:
http://drop.sC/234682 - SMall sentry/stalker army was eaten aLive by zerglings at the moment they left their base.
(Actually it was a pretty long game after that, but it is a good example I think)