Just read that Stephen Spielberg and Harrison Ford were on Seesmic through Loic Le Meur's Twitter. Very cool. This type of celebrity tracking and interaction is great for Seesmic, and an avenue that more celebrities should take. Imagine Paris Hilton on Seesmic for a few minutes everyday? Or Warren Buffet downloading his thoughts once a week?
Loic has more from his blog, "Steven Spielberg, Harrison Ford, George Lucas in Seesmic this morning," and Guardian Journalist Jemima Kiss has more here.