Guests and Topics: May 17

Behind every significant change in American history — There lies a great debate. Freedom of speech entitles all Americans to stand up for what they believe in. There are two sides to every coin, and a true debate will bring forth the important facts. So stay with the # 1 nightly debate program on cable news because — We Debate. You Decide.

Tonight on "Hannity & Colmes" ...

• History in the making as gay couples exchange vows in the Bay State (search) -- Marital bliss or moral dilemma? Dr. James Dobson of Focus on the Family weighs in.

• Sarin nerve agent and mustard gas discovered separately in Iraq (search) -- Tip of the iceberg? Expert insight and analysis from former weapons inspector David Albright.

• American hostage Nick Berg (search) was beheaded in a grisly video posted on an Al Qaeda-linked Web site.

The chilling videotape is yet another wakeup call from the War on Terror. It also raises new issues for parents ... Do you want your child seeing images such as Berg's brutal slaying? And if not, what if a teacher decides to show such images? Radio talk show host Rick Roberts and angry parent Carol Donohue sound off.

All these stories and much more!

Don't miss "Hannity & Colmes" LIVE this evening at 9 p.m. ET!