Well there is a bit of a problem is that you can't - not really though this looks like it does the trick
http://blog.gemsolution.co.uk/2008/01/05/calculated-column-using-today/.
BUT the big problem is this
"the formula will not calculate all list items on refresh but rather by the addition and deletion of a new Today column or by editing each of the list items individually."
So this formula - pretty though it is won't cut the musturd
IF(TEXT(Today,"mmm yyyy")=TEXT([Meeting Date],"mmm yyy"),"Yes","No")
nor can you use this to organize items in a list or library by year by using this formula http://glorix.blogspot.com/2007/07/filter-by-year.html
But to the rescue comes pathtosharepoint
http://pathtosharepoint.wordpress.com/2008/11/24/countdowns-a-second-method/
