I got really lucky when I last went to see them (2003, Earls Court, St Anger tour). I only found out they were playing about 3 weeks before the gig, so I rang up to get a ticket, and was told all they had left were "restricted view" seated tickets! I got one anyway, got there to find I was in the block next to the stage, second tier! So I was well chuffed as I was only 40-50ft from the stage and could see them perfectly!
Hope I get this lucky this time