The other day my friend and I noticed that the GMail chat has various ‘animated’ emoticons that you can use while chatting with your friends. While browsing another site I found a listing of the emoticons that can be used and what key combination is needed for them (they are listed to the right). They are so simple yet they are fun to use.
Also, another thing is that if you are using GMail Chat with Firefox and have the AdBlock extension installed then you might experience crashes. If you have noticed this happening then try disabling the AdBlock extension and clear your cache.
News Source: The Unofficial google Weblog