Gaming and video editing Desktop all the way. if you do most of your work on websites or basic stuff like spread sheets and data bases, and you move around alot then of course a Laptop.
I do basically just gaming, so my Desktop is more important to me, even though its in serious need of an upgrade.
i did also build a gaming laptop for when were slow at work, or im away from the house (im posting on it now from work, played WoW for a while earlier
) it does well in gaming, I can play HL2, TF2, AoC, and WoW with everything turned up high, and get around 30fps... not super but definatly playable. but even my aging desktop still beats it.