I'm gonna go ahead and throw in another contender. I use it and it rocks.
Google Chrome. ?
http://www.google.com/chrome
Just take a look at their development cartoon thing. It really has a lot of brilliant ideas behind it.
I used to use Firefox, but for some strange reason, after one of my 500gigs died, my Firefox started crashing. Which never happens... Firefox is way too awesome to crash. Another smaller option is the Opera browser (I use Opera mini on my Samsung e250 piece of crap. Brilliant little Java program.)
As for IE, I have disabled IE completely from my PC. Long burn it in a fiery doom.