I went through the dotcom crisis and never heard of GFC until today. I've always seen it as the finsys crash.
To non-Americans, "global financial crisis" is the standard name we use for it. Inside the US (at least from my experience, when I lived there a few years ago) it was just financial crisis (without "global"), or the housing crash. Draw from that what conclusions you will about how Americans see their place in the world ;)