The 5.45- x 2.9- x 2-inch design most definitely avoids any hints of a curve, but the 4.3-inch WQVGA touchscreen display, miniSDcard slot, and iPod connectivity help to alleviate the questionable styling.
It seems almost an afterthought that you also get Office doc viewing, Mobile Search client (like Directory Assistant for Palm), and audio and video playback software here, although you'll need to add a miniSDcard to your growing collection of flash swag if you want to take advantage of the latter two features, as the N80 only comes preloaded with 40MB of memory.
Whereas SD Card Association worked with mobile handset manufacturers to develop the miniSD and microSD standards, Sony went it alone and missed its mobile opportunity.