WARNING: The following might contain a little trolling and may in fact rile an argument. This is however my view and you don't have to read this. If you don't agree, and you can't argue constructively, don't comment.

After spending some time with Windows 7, XP, Ubuntu 9.04, and Mac a few things occurred to me. My favorite OS from top to bottom.
Ubuntu 9.04
Windows 7
Mac OSX
Windows XP

It is here and in full bloom. I tested the 64 bit and 32 bit editions respectively. The 32 bit edition felt slow and doggy compared to the 64 bit brethren on the same hardware.
Hardware Tested:
Intel Core i7
Intel Core 2 Duo
Intel Pentium 4 3.2ghz
AMD Phenom x4
AMD Athalon x2
AMD Athalon 3700+
512MB 32 only
1gig ram 32 and 64
4gig ram 32 and 64
8gig ram 64 only
16gig ram 64 only
Nvidia 9800gtx
Nvidia 7200gs
Intel Integrated Graphics

---The Good---

Ubuntu has come a long way hasn't it? This review is mostly my opinion as I have tried it out and have nothing ill to say about it in general, these are just my nuances.

A few things Canonical should do:
Include Flash and Video Drivers

The good:
The price has fell to competitive rates. OSX is really beautifully done, a true work of art. iLife is totally amazing and some of the applications are must haves. iPhoto has facial recognition, iMovie is well put together, iDVD is an awesome DVD menu making tool, iWeb is a great simplistic WYSIWYG web page editor(although not as feature-full as Dreamweaver and Fireworks). iWork is awesome as well. It has true full screen editing in Pages Numbers, and Keynote taking any and all distractions away.
The Bad:

I will try to keep reviews of stuff as troll free and family friendly as physically possible. That doesn't mean I will ignore a fault of a certain product, and may catch flak for it from some fans of that technology. I am ready for this and have thick skin. It also doesn't mean I will ignore the fault of a certain company just to look good to the fans of the product. My native language is not English so if I have a few grammatical errors, I apologize. I spoke German from child-hood up and only recently, four years of studying, learned English. If I am wrong (it has happened...