know any good web usability training/events???

any web designers/programmers/project managers know of some decent website usability training sessions--in the US?

i've been looking at a few, but i figured maybe a few people on here have been to some programs i haven't found on the web that they would recommend...

thanks...

great, thanks jook...it's about 35 degrees over here in washington, so i sure as hell won't mind goin to l.a. for a day to two...

thanks--