For one, they have a video about the the six here, with coach Mike Lonergan talking about them. Maybe we should starting calling them the Big Six, or something catchier than that?
In short, Bull transferred from Missouri, Creek came from Indiana (where he graduated) and McCoy transferred from Manhattan. Creek, a 6'5" guard, was the highest scoring freshman in the country in 2009-2010. Bull is a 6'4" guard and McCoy is a 6'9" forward. It seems that Creek has one year left while McCoy has 2 and Bull has 3, so that's good!
GW also put together this pretty awesome post: 10 reasons you should be excited about the transfers. Good stuff. You are doing yourself a disservice if you don't check it out.