By Andy Tarnoff Publisher Published Oct 30, 2009 at 11:44 AM

Other than April Fool's Day, today is one of my favorite days of the year at OnMilwaukee.com. As our office does every Halloween, every employee dons a costume and hams it up. Tomorrow is, of course, the big day, but we're celebrating it today.

This morning, we'll giggle a bit, snap some photos, then head out for an office lunch (in costume, of course). Sure, a few people grumble about "mandatory" costumes, but in the end, everyone appreciates being forced to act like a kid for just one day a year.

I could go on and on about why I chose to be John Oates this year (well, actually, it's just because of his mustache), but this is one blog in which photos can do all the talking.

Enjoy the slideshow above and Happy Halloween, Milwaukee!

Andy is the president, publisher and founder of OnMilwaukee. He returned to Milwaukee in 1996 after living on the East Coast for nine years, where he wrote for The Dallas Morning News Washington Bureau and worked in the White House Office of Communications. He was also Associate Editor of The GW Hatchet, his college newspaper at The George Washington University.

Before launching OnMilwaukee.com in 1998 at age 23, he worked in public relations for two Milwaukee firms, most of the time daydreaming about starting his own publication.

Hobbies include running when he finds the time, fixing the rust on his '75 MGB, mowing the lawn at his cottage in the Northwoods, and making an annual pilgrimage to Phoenix for Brewers Spring Training.