According to CNet.com, the DS Lite ranks number 9 on their list of top 10 products with a high 'wife-acceptance factor.' CNet is quick to claim that women get their game on with the PSP as well (we doubt it), yet say that women prefer the games on the DS and suggests matching his and her units. We concur and suggest you even get them engraved.
Some of the choices on the list are a little odd, like a 50 inch plasma TV set. However other choices, such as the digital photo viewer, have a little more thought behind them. Now, we're not trying to be chauvinists by any stretch of the imagination, but we're sure our better half could think of something better to do with the $2,000 US we'd blow on that TV (or something better for her to get, rather).