Firefox 3
FireFox 3 is coming out next month in June. They're going to have a "Download Day" to try and set a record for the most downloads in one day. I encourage everyone to take part in this. Or, at least start using this browser especially if you are currently using IE6. For the love of God, upgrade to anything better than IE6!
http://www.spreadfirefox.com/en-US/worldrecord/