I can see a lot of people really DISLIKE the Nokia N-Gage, but the logic placing it above the GAME.COM as WORST handheld made is flawed. It may indeed be the most disliked, but it's certainly not the worst from a technical or practical standpoint.
* The first NG was indeed poorly designed, but even that one had some decent games and a good color screen. That model is gone - the QD is it, now.
* The QD was VERY WELL received at E3 (I was there - some of the games were amazing considering the power of the unit itself). There was a ton of activity at the Nokia area and gobs of nice looking games in the pipe. They made no bones about admitting the original model sucked and that the new one had much-needed redesigns.
* Like it or not, the Nokia has some pretty decent developer support at this point - better than the Zodiac, GP32 or even the NGPC when it was around (SNK never had as big a presence at E3 as Nokia did this year).
That said, the GAME.COM was a pathetic attempt at a kid-targeted system that implied wireless connectivity with its trendy "dot-com" name. Like its namesakes, it flopped big-time, and rightly so. The original NG hasn't done well, but this newer version with its $99 pricetag is set to command the cell-based gaming market for 2004 and 2005. That niche is growing fast.
For the people who voted the VirtuaBoy as worst, whatever with that. Sure, it lacked many good games and isn't a true handheld, but it's actual for-real 3D, funky reddish graphics and just screams 'funky coolness'. True about getting a headache if you play it too much, though. And why is the GP32 even ON a 'worst ever' poll list? I've got a GP32 BLU on order - it's currently the best handheld gaming platform available right now (the Zodiac is just too much money, and its impressive 8MB ATI Imageon chip is crippled by multimedia-unfriendly PalmOS), unless you're a hardcore flash linker and have a GBA SP.
A distant runner-up for crappiest game handheld definitely is the GameGear. That blurry (blurry?? on an LCD??) and washed-out display simply sucked. There were some good games, but what's a good game when the heavy, battery-sucking system has a display that makes you tear up just looking at it? It wasn't until I started playing some old GG games on my PocketPC that I was able to appreciate those old titles (there were good ones - the import Godzilla game was awesome).