I'll second (third? forth? fifth?) Risk!
That game has caused more family bust ups than anything else ever.
Mostly on account of my dad (after a few too many) cheating by invading all countries at once on multiple boarders and saying it's totally in the rules and that we agreed at the beginning of the game that it was okay to play 'World Domination' like that and then my mum storming out saying she'll never play it again, only to repeat the whole ordeal next Christmas. Yay!
I also used to like Key to The Kingdom, which I guess is sort of like Dungeons and Dragons, except you don't have to be a massive nerdbrain to understand the rules (I wish I did my life would be so awesome yay) and you still get to use magic and fight dwarves and goblins and look for treasure and use grapling hooks and magic. BOSS.
More board games in pubs/clubs/clubnights please!
A lot of pubs do have board games but you always discover a vital piece missing after you've already spent an hour playing the damn thing. Like all the 'a' and 's' letters missing from Scrabble. Or the double six missing from Dominos. Balls!
Key to The Kingdom:
Oh, and that board? Totally folds out to like twice the size once you go down that whirlpool. Awesome.
Interestingly enough a google search of Key to The Kingdom brought up this:
Key to the Kingdom
Church of Christ sponsored television outreach ministry.
Television outreach ministry? WHAT DOES IT EVEN MEAN?