My personal favourite is probably gamerival or miniclip

They both have fantastic games that I love to just sit and play... If anyone uses miniclip, have you ever played that game called Bubble Trouble, it is the best game ever. I could play it for hours if I could.

I know the game site Shockwave as well but I don't play that one as much as the other two.

What's your favourite?

EDIT BY HOLLY: You may discuss your favorite boards and tell the name but posting the direct link is NOT allowed.