Past guests on System Showdown include:

• Arnold Kim, founder of MacRumors.com (our first big interview).

• Ray Hansen, co-creator of the Blendtec “Will It Blend?” videos.

• Peter Furia of the “Mac or PC” Rap music video and Pantless Knights.

• Mary Jo Foley of the “All About Microsoft” blog on ZDNet.

• Brandon Harris Walker of “Chinese Food on Christmas” video.

• Rick Savoia of “The Force Field” podcast.

• Douglas Bell, of the “phpBB Weekly” and now-retired “PreviewCast” podcasts.

• Daniel Brusilovsky of “The Apple Universe” podcast.

• Bwana McCall, of Bwana.org and Bwana.tv.

• Patrick O’Keefe, author of the book “Managing Online Forums.” (Twice!)

• Kevin Middleton, also known as the YouTube personality JewishDOOD.

• Adrian Bacon of the “Apple News Log” podcast.

• Michael Krigsman of the “IT Project Failures” blog on ZDNet.com.

• Jeffrey Powers of “Geekazine.”

• Penn Masala, creators and singers of “The Facebook Skit.”

• Kevin Ryan of Search Engine Watch.

• Michael Weinreb, author of The Kings of New York.

• Michellene Barrett, author of Englisha and David’s Adventurous Vacation

• Annie Gaus, host/writer of Revision3’s mobile application review show AppJudgment.

• Nicholas Deleon, writer for CrunchGear.

• Michael Larabel, founder of Phoronix Media.

• Kevin Purdy, Senior Editor for Lifehacker.

• David Sarno, writer and blogger for the Los Angeles Times.

• Amanda Congdon, host of Sometimesdaily and former host of Rocketboom.