I was just reading the posts about how it's possible to meet Gord Lightfoot. I've done it a few times and was invited back stage by Terry Clements once!
98% of people aren't going to bother waiting around the backstage door after the concert as it will be 10:30-11:00 pm by the time the guys emerge.
As long as you are polite and respectable and there isn't a throng of people, you will get in to see him. ( Well in theory anyway

)
However in my case, it may or may not be easier because my name is Gord as well, the guys in the band find that an easy name to remember.