Hoping not to touch off a Firefox/IE/Opera debate, but I've been using IE7 for a few days now.... More than likely, I'll eventually migrate back to Firefox again, but for the moment I'll give the new IE a shot.

It looks suspiciously like Firefox, though -- tabbed, a search box in the corner (defaults to MSN Search, but promptly reconfigured to Google), etc. Should be interesting to see how things pan out....