A few more that come to mind:
Michaels vs Undertaker....ANY match they had but especially the HITC
Austin vs Michaels WM14
Michaels vs Jericho WM19
Brock Lesner vs Kurt Angle WM19 (that shooting star press was unbelievable)
Kurt Angle vs Eddie Guerrero
Austin vs The Rock WM15
Michaels vs Razor Ramon WM10 ladder match
HHH vs Batista HITC
HHH vs Austin (1st title win on Raw)
HHH vs Cactus Jack HITC
Undertaker vs Mankind HITC
Michaels vs Mankind In your House PPV
Mankind vs Undertaker Buried Alive
The HBK/Hall ladder match was great.
Since then, there have been bigger and better...but, I think that one - being the first - really cemented its legacy.
I know that it gave Bret a red ass seeing his idea played out with him out of the loop; especially after he made Vince promise not to do that match with anyone else.
Does anyone have footage of the Stampede ladder matches between Bret & Dynamite?