Currently I am using 512K :( broadband connection at home and we have 3 T3 lines at work. :D
University Corporation for Advanced Internet Development aka Internet2 can change the way we use Internet. According to Internet2 official site, "It is Led by more than 200 U.S. universities, working with industry and government, Internet2 develops and deploys advanced network applications and technologies for research and higher education, accelerating the creation of tomorrow's Internet".
According to Yahoo article, "...An Internet that leaves the current Internet in the dust is within reach. Some lucky individuals have already seen the possibilities thanks to the next-gen Net's major research network, a consortium of more than 300 universities, research labs, government agencies, and corporations called Internet2..."
I will be happy to see such powerful high speed Internet2 at home (and I hope they will not forget about security and hackers/spammers).