BoA debuts in America October 21, 2008
2NE1 collaborates with Will.i.am in summer of 2010 for a possible American debut in 2012
JYJ collaborates with Kanye West with a released album The Beginning October 12, 2010
Big Bang wins MTV’s VMA award for best for Worldwide Act 2011 November 6, 2011
Girls Generation performs on David Letterman’s show aired January 31, 2012
Keep adding to the list guys.