12/26/2005 at 01:00 AM EST
Not since the Rubik's Cube has a number puzzle been so addictive. With books, tournaments and online programs for insatiable devotees, it has become as ubiquitous as crosswords in newspapers.
Forty-two million users blogged, downloaded photos, cruised other user profiles and got exclusive previews of their favorite TV Shows, like The Office
, and bands, like the Black Eyed Peas
The last word in It-Girl chic, these requisite accessories took the Jackie O. look to another level.
Waiting lists sprang up for this new "designer mutt"—half pug, half beagle—with celebs like Jake Gyllenhaal
and Julianne Moore taking home puppies.
The fancy footwork of John O'Hurley, Joey McIntyre and Kelly Monaco made ABC's Dancing with the Stars
a hit, while a group of inner-city kids danced to their own beat in the documentary Mad Hot Ballroom
In March of the Penguins and the animated movie Madagascar
, these roly-poly birds waddled their way into our hearts—and to a box office boom.
The humble kukui nut had its moment in the sun when it became the boho accent of the summer: the very fashionable rope o'nuts.
It was the breakup that divided a nation, but we expressed our loyalties with these cult-status T-shirts.
The self-tanning lotion flew off the shelves in drugstores and supermarkets. Women scoured the Internet, even bidding on eBay for the $5.99 miracle cream.
The supersleek, teeny-tiny Nano made the previous generation of sleek and tiny iPods look about as cool as a Walkman.