I love board games, too (and am not over 35 either - AND, I've always liked playing them... I grew up playing games at family-and-friends get togethers). Trivial Pursuit always seemed very, very difficult to me as a teenager, but we usually played in teams containing adults too, so it wasn't too bad. But I remember playing the 20 year old version last year, for the first time since the 'new' version was released, and my memories of its difficulty were challenged.
Never heard of most of the games mentioned on this thread, but have tried to buy non-UK available board games before at amazon.com and we're not allowed, so this thread has reminded me to try ebay.
I actually really like Monopoly, but that's because I usually win.
I am really such a terrible loser it's not funny...
My favourite is Scrabble. There's a brilliant game you can play with Scrabble too, called Bananagrams, or something. You each start with 15 tiles and have to make your own linked words, getting more tiles whenever your 15 are used up. When there are no more tiles left, you add up your scores to determine a winner.
Another big favourite is Scene It.
And of course then there's chess.
