On the shabbat that Tal and I were in Golders Green, Tal taught the kids how to play Oh Hell (I had to help a little with the teaching). This proved to be a difficult game for them.
I then taught them how to simulate Loco using a regular deck of cards. It's easy to play, but I'm still not convinced that the game is any good.
The father surprised me by challenging me to a game of Othello later in the day. I totally slaughtered him, which I found rather strange.