Dominoes rear their head every once in a while in the League. I try to avoid them, but whenever we're short on numbers I'll be forced to play them. Actually my success rate isn't that bad.
This link was mentioned to Jay last night. It's a reasonably good dominoes game which I've found quite challenging > Jamaican Dominoes Have a go and see what you think.
The game is free and doesn't seem to include any malware.