Time Wasters

name="numberlogic">PUZZLES
Number Logic
Caught up in the current Sudoku craze? This site offers a hefty supply of puzzles to tackle. Work independently or compete head-to-head against other registered users. There are three levels of difficulty; the site will time you (there's a pause button if you need to take a breather) and, if you wish, "validate" your answers (and highlight any mistakes). You don't have to sign in to use the site — but you do if you want your scores recorded.

CELEBRITY GOSSIP
TMZ
Kudos to these newshounds who broke the Mel Gibson story. TMZ is the place to go when you need a shot of entertainment and celebrity news; its "gotcha" style reminds us of The Smoking Gun. Scroll down to the bottom of the home page for links to the latest posts on some of the other "hot blogs" in the celeb category, including "L.A. gossip rag" Defamer and the more media-centric, Manhattan-based Gawker. Got more time to kill? Pink Is the New Blog dishes with flare. (Full disclosure: TMZ.com is part of AOL, which is owned by the same company that owns Time.com.)

MOOD LIFTER
Cute Overload
Because sometimes you just need to look at pictures of kittens. Or farm animals. Or hedgehogs. This popular blog provides a daily dose of cute imagery, found somewhere on the Internet or emailed in by a fan. Browse categories ("Pocket Pets," "Cats N Racks") or follow the site's links to more cuteness at sites like Baby Animalz.com and Pandafix .

PAINTING
Jackson Pollock by Miltos Manetas
Here's a place where you can indulge your inner abstract expressionist: move your mouse to splatter virtual paint and click to change the color. To create a hard copy, right-click on the "canvas" and select Print.

FREE GAMES
Shockwave
You'll find a variety of ways to procrastinate here — there are games you can play by yourself, and multiplayer games; flash games you play inside your browser, and games you download. You can browse by category or search by keyword (check out Loop, under Adventure). If you don't already have the latest Shockwave Player installed on your computer, you'll be prompted to download it.

MONSTER MASH
Yu-Gi-Oh Groove
Here's one for the kids: a site that features characters from the popular anime world of Yu-Gi-Oh, doing something they don't ordinarily do: dance. It's silly and fun — you mix and match the music and moves. Developer Timothy Harris photographed the actual toys in various poses to create the stop-motion animations. Best feature: though sponsored by Mattel, there's not an ad or corporate logo in sight.