I've got one, I think its a great little console, but the launch games pretty much stink. I think things over here in Scotland are different because I just walked into the Asda (basically our wal*mart) and bought one on launch date, the woman at the checkout even phoned someone up to ask how to sell the first 3DS. And I didn't go there early, the shop was open 24 hours and it was already on sale for over 10 hours at this point.
I just thought that was funny after I read all week before hand that the thing was going to be sold out everywhere, clearly hype, at least for the UK.
I don't regret buying it though, just wish it had better games.
The 3D effect is quite impressive, I got Super Street Fighter 4, Nintendogs+Cats Golden Retriever edition, Pilotwings Resort and Rayman 3d.
Mini review of each:
Super Street Fighter 4 - Very good version of it, the 3d makes the characters really stand out from the background at least, the major disappointment for me was the static backgrounds, they don't move, the African safari level for instance has a hippo with its mouth wide open, really obvious, they should've removed all the people and animals from the scenes, they feel like they are fighting in a time freeze. Asides from that very impressive graphically.
Nintendogs+Cats Golden Retriever edition - A great little game, maybe I just like dogs but this is a major improvement over the first DS one, dogs are much more realistic - they got rid of the pain in the ass walking where you had to chart your way, some say this is a negative but I prefer the simpler approach, the graphics are great, the dog looks and sounds better and the 3d really adds to it.
Pilotwings Resort- The 3d is the worst here, because I can't look at this game for more than 10 seconds without getting lost, it really causes a headache, I have to have the 3D down at a much lower setting than other games to tolerate it, I don't think the 3d is done very well is what i'm saying, makes me feel a little ill to look at it, its fun if you can get over that point, other people have complained about this too so I know its not me.
Rayman 3d - unless you've never played one of the million ports of Rayman 2 - don't bother with this, its just Rayman 2 again, the 3d adds a little bit to it but the music abruptly stops, the framerate drops, its just not that great.
Most looking forward to Zelda Ocarnia of time 3d, star fox 3d and paper mario 3d, hopefully some games that aren't remakes will come out soon that are good too, haha.