My friend's got one of these and I plan on getting one myself. I'm not sure how it works but it really does help open up a glass of wine (and instantly improve the flavor of wine that's a little on the cheap side).
Got this for Christmas. In theory and practice, this should provide max airing in minimum time. My palate is not delicate enough to discern a difference BUT, this is a super fun gadget that makes a cool sound when you pour through it. And if my taste buds weren't completely trashed by too many fast food french fries I probably would notice that my reds are fuller after a trip down the Vinturi!