Design Fairs/Expositions

I was wondering what are the major fairs/expositions where monsters like Adobe, Corel, Macromedia and others take part with their design-related products? I am interested to know about the States and all over the world. Thanks for any info in advance!

hmm would be cool if we had fairs/places around here doing that but i dont think it happens in scotland

or maybe it does and i just dont get out enough