The serious and the wacky.

Making their appearance at day one of Macworld Expo were quite a few hardware peripherals, a term used loosely for some of the wacky products on the show floor. So not everyone needs the ability to have Adequate Spatial Sampling for their noggin. But the handy Dense Sensor Array EEG from Electrical Geodesics does just that. Available in a 64 or 128 Channel Electrode array, it gives an excellent EEG, applies quickly, and is comfortable to wear for hours. The information gathered while wearing the "helmet" -- which looks like a seismograph print out -- can then be made into a QuickTime movie, and provide doctors with needed information about the brain of whomever is wearing the device. Wacom Technology_s handy, and inexpensive, Graphire provides users with both a USB pen and a wireless mouse, and now you can get one to match your iMac. For anyone who likes using a pen instead of a mouse for creative art projects on the computer (in Photoshop or Canvas for example), the tablet is an ideal device and sells for just $99. Also from Wacom is the eye-catching PL-300/400 LCD Display Tablets with Erasing UltraPen. A bit higher priced than its colorful peer, it allows you edit images, draw, and even add your signature to documents. The best part is, you touch the pen to the display so the feedback is instant.