I've just downloaded the public beta of IE7. Haven't used it much and must say that it looks very "Mac".

Some of the features (e.g. RSS feeds) seem pretty good. Some of them (e.g. tabbed browsing) are just catching IE up with the marketplace. We were also promised a fix to the image transparency problem which I haven't had a chance to check out yet.

If you don't know what "beta" means, then you are probably better off waiting a while. If you want to download it though, check out Microsoft's site