My wife and I bought a laptop from Dell preinstalled with Ubuntu. I am impressed with Dell for this offering. I have only been using this system for a short couple of hours but I like it.
The specifications are a Intel Centrino dual core 1.83 mhz cpu 1 Gb of ram 15.4 inch screen. Has a green top DVD burner and even has some ports I wasnt expecting. The wireless card was an intel that was already installed and ready to go. So far I am impressed and again thanks to Dell for offering this with Ubuntu.
:update:
I have been with this laptop now for about 6 months and I tell you I couldn't be happier. Everything works as stated its a solid laptop and the best part is I didn't have to pay the Redmond Tax.
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this is the sd and media slot. got to use this a few times to take pictures from our camera and put them on the notebook.
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right side of the laptop has a burner and lots of USB ports.
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the left side has vga out, hdmi, firewire, ethernet and more USB ports.
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laptop keyboard and monitor.
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Ubuntu loading for the first time
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top is a pretty green for my wife.
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that is the stuff that came with it