DD is about to turn 6 and desperately wants one - "all" her friends have got them (2, so far as I know, but unfortunately those 2 are her closest friends...)
We got a Wii at Christmas for much the same reason that Cadmum did - movement, more 'family' oriented. However, DD's behaviour has definitely worsened as a consequence of being on the Wii for long periods - by that I mean more than 20 minutes, which will happen if her and DH are playing Super Mario Twats (or whatever the fuck it's called) as they're quite far up the game levels - shouty, angry, refuses to come off it, ignores everything around her - and having seen her cousin behave similarly and worse with his DS (practically glued to it!), I am refusing to get her one.
My excuse to her is that she needs to be able to read without help before she can have one, in order to play the games properly. I have the feeling that if I give in on this one, I'm going to end up with an illiterate child...(her reading is appalling, btw, she can do it if she applies herself, she just can't be arsed to concentrate and look properly at what she's reading - all fine in school, gets glowing comments in her reading book, comes home and claims she can't read a word...but that's a whole other thread!)
Funnily enough, her aunt asked her this morning what she wanted for her birthday and she looked at me and said 'well, I don't think I'm getting what I really want, because I can't read yet', and then asked for zhu zhu hamster stuff...
She's getting a bike without stabilisers from us for her main present [stoutly old-fashioned smiley]