You have to decide first if you want dedicated video RAM for games and higher end video programs. You cannot add a dedicated video card to a notebook with shared video memory (integrated) later (and this also uses part of your system RAM -- dedicated video memory is separate on the video card).
The Toshiba Qosmio is very expensive and only worth it if you use all its features (DVR built in, all the multimedia functions, etc). Sony also has a notebook over $2500 with similar features.
The HP DV1000 is an outstanding new notebook with a 14" widescreen (I don't know of another mainstream notebook with a 14" widescreen except the Compaq) -- it has the DVD/CD functions with the computer turned off and the Pentium M Dothan with 2mb L2 system cache available. It also weighs only 5.3 pounds. The only negative is that it has integrated (shared) video memory but if you use it mostly for wi-fi, Microsoft Office, etc it is fine. I would get this over the Compaq V2000 as that model does not have some of the DVD/CD features the HP DV1000 has and the cost difference is negligible (HP DV1000 has remote control also that fits into PCcard slot).
The Acer2020 is a great notebook but it is only sold as a prebuilt so you have to like the specifications and it is a bit pricey. But if you want 128mb dedicated video (ATI 9600) then buy it. It is a 15.4" widescreen at 6.6 pounds.
The Acer 2000 series is built by the same Chinese company (Compal) as the HPZT3000 and Compaq X1000 series (I have the Compaq X1000 series). It is fully customizable with the 15.4" widescreen and HPBriteview LCD in XGA (or SXGA and UXGA resolutions available). It weighs 6.5 pounds. You can only go up to 64mb dedicated video with an ATI 9200 but that is fine for many people. You can order the memory, hard drive speed, optical drive (DVD ROM/CD-RW or DVD burner multiformat, etc) you want -- a 5400 rpm hard drive will give you up to 50% better performance at startup, etc.
There are a ton of discounts for HP and Compaq notebooks. See the X1000forums.com dedicated website for ordering specs and discounts available (many of which would apply to the HPDV1000 also).
You can easily get the HPZT3000 or HPDV1000 for between $1,000 and $1,500 fully loaded dependign on specs (save money buy ordering 1 stick RAM now 256mb and adding your own 512mb PC2700 module yourself later for under $100 when on sale).
Going with the Toshiba Qosmio is breaking the bank (over $2500) and too much considering you will want a 64bit notebook in 2 years when Microsoft Longhorn is out.
The Acer is also a bit pricey (near or above $2,000) but if you like the specs and the 128mb dedicated video buy it.
Otherwise, look at the HPZT3000 (or sister Compaq X1000) or the HPDV1000.
I'm looking for a great multimedia laptop under 7 lbs. So far, I'm leaning toward the Acer Aspire 2020, but I'm also looking at HP Pavilion DV1000, Compaq V2000, and Toshiba Qosmio E15 (over 7 lbs.)
Any idea which is best?