Eeast coast of Canada talking here so there's gonna be a few bands nobodies heard of here, but to start off(my formitive years) here goes.
Ratings are ona 1-10 scale
First live band in a bar at 17 yrs old - Minglewood rating    9
First live concert April Wine -  rating 8
First Outdoor concert - Doug and the Slugs and a Simond and Garfuncle cover band rating 101/2 (rating probably had something to do with the mushrooms that grew in my backyard)
April Wine and Foreighner -  rating 8
Stompin Tom Conners  -   rating 7
Grew up and moved to Ontario
AC DC Who made Who - 3 rows back in front of the stage, Angus Young blew me away, still wondering if he will have my babies?   rating 10
Trajically Hip (3 times) - They were a bar band whene I first saw them just startin out in the late 80's in Kinston Ont  - rating 10(still one of the best live acts i've ever seen)
David Wilcox - rating 8 - Great Canadian artist that no ones ever heard of. Sortof a ryhthm and blues witha solid rock beat, if you never heard him see if you download some MP3's you wont be disappointed.
Work took me to Edmonton and concert heaven
George Thorogood - New Years Eve, what a night - rating 91/2
Double bill ZZ top and Van Halen(unfortunetely without David Lee Roth, with Sammy Hagar) ZZ was excellent but Van Halen without DLR is not Van Halen. Nuf said - rating 6
NEIL YOUNG(MY FAVORIT ARTIST) RAGGED GLORY TOUR-What can I say 10 1/2
Stompin Tom again (It's bud the spud from the bright red mud) most CND's will understand - rating 8
Summer concert tour with, Brian Adams, George Thorogood, Def Leppard,Barney Bentall,April Wine, and a couple country bands I dont remember -rating 10

And the alltime favourite was a concert I saw in SanFrancisco
Joe Satriani followd by the Steve Miller Band - rating 12

I think I've probably missed a few in there but those are the highlights

Hmmm, yea like how could I forget the two Stones concerts, both Bridges to Babalon, Toronto and Quebec City.  Rating 10 for both