to use a bit of ar15.com verbage here:
IBTL
um....Avantbrowser is a cool mod for IE that makes it much more...modern. I was using Opera but was getting frustrated with the inconsistant java support. Avant basically turns IE into Opera, but it's still IE so everything works. It blocks the popups, opens window inside the browser instead of filling up your task bar, has mucho better security options, etc.
My linux box doesn't get much websurfing action because it's got an old 14" monitor. But, when it does Mozillia all the way! (need to download the Opera linux version for it...)