most boring = fishing (its been on eurosport so its a sport)
must of the 'game' type sports golf, darts etc are dull but a final of a big competition can be pretty exciting. Horse racing is crap unless your at the track and betting, drinking and admiring the fillies. 8)
I love rugby watch it all the time its on TV, except recently its just become a 15 man boring tennis match because the **** referees cannot work out what a ruck is and scrums are endlessly reset because the referees cannot tell the teams to not push until the balls in and are obsessed with getting teams to "take the hit" which is illegal anyway and then the ball gets put in squint, does my **** head in.