It is in the Olympics. It was first introduced as a demonstration sport in The Korean Olympics 1988, then formally introduced as a competition sport in the year 2000
snowboard cross is the sport introduced at the winter Olympics 2010
First introduced as an Olympic sport in 1900. (according to NBC sports announcer)
Curling was introduced as an official Olympic sport in 1998 in the Nagano Olympics.
Sailing became an official sport at the Olympics in the 1900 summer Olympics in Paris, France. It was going to be introduced in 1896, but the wind was not strong enough. It was not an event in 1904, but every Olympics since then sailing has been included.
There is not a new sport but they did ad freestyle for skiing
Golf was introduced into the Olympics in 1900. The 1904 Games were the last time golf was contested.
Indoor volleyball has been an Olympic sport since the 1964 Games in Tokyo, Japan.
Women's boxing will be included in the 2012 Olympics.